Mommy-and-me time has never looked better.

Hilary Duff took her son Luca to for a little trim at Tipperary salon in Beverly Hills, Calif. and the Hollywood mom behaved like, well, any proud mama.

As her tiny tot sat in the barber chair patiently, the 25-year-old was seen happily taking photos of her son as the hairdresser snipped away.

We seriously don’t know what’s cuter: the fact that Duff’s baby is so well-behaved or that she fawns over her kid like all regular moms.

The stars have been keeping busy in the last 24 hours.

Hilary Duff got up bright and early for an appearance on Good Day New York. The 25-year-old actress and mother-of-one has been in the Big Apple all week to discuss her work with Johnson’s Baby Cares.

Speaking of moms, Pink was spotted in Berlin, Germany, where she went on a bike ride with her daughter Willow. The mother-daughter-duo looked extra cool thanks to Pink’s shades and Willow’s stylish helmet. The singer is scheduled to play at the O2 World Arena on Friday, followed by a show in Hannover on Saturday.

In other star sightings, Elizabeth Banks visited a beauty salon in Beverly Hills, Emma Stone and boyfriend Andrew Garfield celebrated the opening night of Bull at Britsoff Broadway and Alexander Skarsgard suited up for a screening of his new film What Maisie Knew in New York City.

For more star sightings, check out the latest edition of Celeb Snaps, above.

From London Town to New York City, Hollywood’s finest have been keeping busy all over the world.

Gisele Bundchen was spotted hard at work on the set of a new H&M fashion campaign in the UK. The 32-year-old mother-of-two modeled a cream sweater, olive green pants and a conductor hat during the shoot.

Elsewhere in London, Channing Tatum and his pregnant wife Jenna Dewan were spotted on separate outings. Tatum, who’s been in town filming Jupiter Ascending, went for a jog with his dog while Dewan, due this summer, took a stroll in the sunshine on Hampstead Heath.

Stateside, Katy Perry looked lovely in a dark floral print dress while out in New York City. The night before, the “Firework” singer got all dressed up for a gathering celebrating Miuccia Prada’s designs for The Great Gatsby film. Perry’s fashion-filled week will continue on Monday, when she hits the red carpet for the annual Met Gala.

In other sightings, Hilary Duff brought a splash of pink during a visit to The Today Show, Khloe Kardashian sat courtside as her hubby Lamar Odom and the L.A. Clippers took on the Memphis Grizzlies during a playoff game and Lena Dunham filmed new scenes for her hit HBO show Girls.

For more of the day’s hottest star sightings, check out the latest edition of Celeb Snaps, above.

The 2013 MTV Movie Awards airs tonight from Sony Studios in Culver City, and you can expect appearances from a cast of thousands, including Brad Pitt and Zac Efron.

In honor of the annual ceremony, we invite you to look back at the 2003 MTV Movie Awards, held at LA’s Shrine Auditorium.  Paris Hilton was just establishing herself as society-girl-cum-famous-for-nothing celebrity, and Amanda Bynes was Nickelodeon’s funny gal.

Nick Lachey and Jessica Simpson were just about to launch their reality series, and Ryan Reynolds was engaged to Alanis Morrisette.

I know.  Launch the gallery to pick up what I’m throwing down.

Veteran Coachella peeps are making way for the budding hipsters to really wave their freak flag this year.

Yesterday, the 2013 Coachella Music Festival kicked off, allowing us to introduce to you the newest members of the Vanessa Hudgens All-Star Coachella Club: Tallulah Willis, 19, and Ireland Baldwin, 17.

Alec Baldwin and Kim Basinger‘s only daughter (who is drop-dead gorgeous, BTW), busted out her Fourth of July gear for the festival, pairing stars and stripes with motorcycle boots and dandy sunglasses (straight from “Walgreens, baby,” she tweeted).

Bonus points: Her boyfriend, Slater Trout, wore a fanny pack.

And then there’s Willis….

The last 24 hours have been packed with plenty of red carpet action, business meetings and personal errands,

In New York City, Charlize Theron was spotted grabbing lunch with director Darren Aronofsky. The actress is currently shooting the new TV series Hatfields & McCoys on the east coast.

Elsewhere in the Big Apple, Emilia Clarke wrapped another performance of Breakfast at Tiffany’s on Broadway. The English actress’ hit HBO series Game of Thrones recently kicked off its third season and has been renewed for a fourth.

Overseas, Tom Cruise landed in Dublin to continue the promo tour for his new film Oblivion. The day before, the mega movie star was in Vienna with his co-star Olga Kurylenko for a photo call.

Back in Hollywood, Pink stopped by an organic grocery store after yoga, Jon Hamm and his longtime love Jennifer Westfeldt took a stroll with their pup while Hilary Duff headed to the park with her adorable son Luca.

For more of the day’s hottest star sightings, check out the latest edition of Celeb Snaps, above.

These Hollywood moms have never looked better.

Whether it’s dancing on stage, walking the runway or posing on the red carpet, these famous mothers have worked hard at getting back to the figures they had before giving birth to their adorable little ones.

In the April issue of Shape magazine, Beyonce Knowles confirmed that she dropped some 57 pounds after giving birth to daughter Blue Ivy in early 2012.

“I didn’t have a lot of time to lose the weight because I scheduled a show three months after I gave birth, which I would never do again,” she told the magazine.

“I’m not a person that is naturally very thin. I am a person that has to work at keeping my body in shape.”

Knowles, 31, is not the only star whose post-baby body Celebuzz is celebrating this week. In the TV world, Kourtney Kardashian and Claire Daneshave also turned heads with their stellar post-baby figures.

Kardashian, who gave birth to her second child Penelope last summer, lost a whopping 44 pounds in six months — a feat she’s proudly flaunted during recent vacations and family outings.

“It took me twice as long as last time but I feel healthy and really much better about it,” she wrote on her personal blog in January.

At this year’s Golden Globe Awards, Danes, 33, walked the red carpet looking fit and fabulous in a red Versace gown, just weeks after welcoming her first son Cyrus.

“I’m deliriously happy. I’m kind of startled to be in this scene, because I’ve been so sequestered. I’ve been in baby world,” the Homeland star told Ryan Seacrest at the time.

Launch the gallery, above, for more Hollywood moms and their amazing post-baby bodies. Then tell us: which star has impressed you the most with their post-baby figure? Do you have any healthy tips for losing baby weight?

Just as Miley Cyrus had Leonardo da Vinci‘s famous heart portrait tattooed on her forearm, this former Disney starlet too got inked with a similar design recently.

The 25-year-old actress stopped by Los Angeles’ Shamrock Tattoo to get a small red heart tattooed on her left wrist Saturday.

“All is full of love…” she wrote alongside an Instagram snapshot of her new body art.

Can you guess who the freshly-inked celeb is?

If you guessed Hilary Duff, you’re right!

The Hollywood mom left her son Luca at home with husband Mike Comrie this weekend to enjoy a girls’ night out with friends at a local tattoo parlor.

Not only did Duff get scarlet heart tattoo on her arm, but she also braved the needle a second time that night when she got matching tats with gal pal Alanna Masterson.

The former Lizzie McGuire star and the Young and the Restless actress has a simple circle with a “2 cent” logo inked on the arm, in which Duff proudly showed off the results on her Instagram.

“Dope @dr_woo_ssc tattoos with @lucytwobows,” Duff wrote.

What do you think of her new tattoos? See how it compares to other famous celebrity ink in the gallery — above.

Justin Timberlake may be riding high off the success of his collaboration with Jay-Z these days. But not all of JT’s past duets have been as stellar as “Suit and Tie.”

Take his collaboration with HOVA’s wife Beyonce. “Until the End of Time” performed fairly well on the radio and held steady on charts around the world in 2007. But the track was the JT’s sixth single off FutureSex/LoveSounds, released well after his megahits “SexyBack,” “My Love” and “What Goes Around… Comes Around.”

Timberlake’s “4 Minutes” was Madonna was also disappointing. While the single received two Grammy nominations and topped charts everywhere but the U.S., there was just way too much going on in 240 seconds, regardless of how convincing the duo was in asking everyone to “grab a boy, grab a girl.”

Celebuzz isn’t picking on just JT. Here are some other disappointing — and forgotten — collaborations of recent memory.

Hilary and Haylie Duff: “Our Lips Are Sealed” (2004) — the Duff sisters covered this classic for Hilary’s modern fairytale movie A Cinderella Story. While the film did wonders for Duff’s career, the song failed commercially.

Madonna and Prince: “Love Song” (1988) – Before their infamous feud (she called him a “little troll,” he said he had more hits), the Material Girl and Prince once collaborated on a song called “Love Song.” How appropriate: the singers dated for a brief time in 1985.

Busta Rhymes and Mariah Carey: “I Know What You Want” (2003) – Mimi’s collaboration with Busta was anything but a collaboration. With just hints of her signature voice, the song made Carey sound more like a backup singer than a featured guest.

Nelly and Tim McGraw: “Over and Over” (2004) – call it country rap or hick-hop, this duet was released as Nelly’s second single off Suit, his fourth studio album.

Justin Timberlake and Madonna: “4 Minutes” (2008) — four minutes was just far too long.

Justin Timberlake and Beyonce: “Until the End of Time” (2007) — for a short while, JT’s collaborations had a common theme: time.

Did we miss some of your picks for most disappointing duets? Share yours below.

Looking good, men.

From Malibu to Miami, the last 24 hours have been packed with plenty of muscle action.

Liev Schreiber quenched his thirst after a day of surfing in Malibu, Calif. The 45-year-old has been catching waves all week.

On the east coast, Criminal Minds hunk Shemar Moore showed off his ripped figure while frolicking in the ocean in Miami. The former soap opera star kept a low profile with big sunglasses and a cap, but made sure to acknowledge the nearby photographers.

Speaking of ripped, Vin Diesel recently shared a shirtless picture from his upcoming cover shoot for PRESTIGE magazine. The 45-year-old Fast & Furious 6 star kept his cool while he posed with a leopard.

In famous family sightings, Sarah Jessica Parker and her twins Marion and Tabitha braved the snowy weather on their way to school in New York City while Hilary Duff and her son Luca headed to a play date in Los Angeles.

For more of the day’s hottest star sightings, check out the latest edition of Celeb Snaps, above.

From supermodels to supermoms, Wednesday was packed with plenty of star sightings.

Alessandra Ambrosio showed off new Victoria’s Secret apparel during a new photo shoot in Venice Beach, Calif.

“Early morning wake up call, nice #sky by the #beach !! #california,” the 31-year-old beauty wrote on Twitter.

Meanwhile, Hilary Duff and her son Luca headed to a class in Sherman Oaks. Duff and her hubby Mike Comrie will soon be celebrating a milestone: Little Luca turns one on Mar. 20.

Fellow Hollywood mom Halle Berry has been busy doing press for her upcoming film The Call in recent days. On Tuesday night, the 46-year-old celebrated the movie’s L.A. premiere at the Arclight Cinema with co-star Abigail Breslin. The thriller opens on March 15.

Over on the east coast, James Franco stopped by the Sirius Radio Station to chat about his new film Oz The Great and Powerful. His co-star Michelle Williams, meanwhile, was spotted out for a walk with her pet pooch in the Big Apple.

Across the pond, Justin Bieber sported a Brooklyn Nets cap for a night out in London while Jessica Chastain continued to take in the sights and sounds of Paris Fashion Week in France.

For more on the day’s hottest star sightings, check out the latest edition of Celeb Snaps, above. 

Hilary Duff is living it up.

The actress jetted off to Hawaii with family and friends this week for a private vacation, and she took to her Twitter to shared her personal photos with fans.

In one snapshot, a bikini-clad Duff is seen blowing a kiss with a gal pal as they soaked up the sun.

The 25-year-old was also snapped showing off her gorgeous gams as she enjoyed a glass of iced coffee from the comforts of poolside a lounger.

“Iced coffee with a big heaping side of SUN! #maui #feelin-it,” she tweeted Wednesday.

There’s certainly plenty of reasons for Duff to be kicking back. After all, the mom-of-one and her husband Mike Comrie recently taught their son, Luca, how to walk.

“Well I officially have a walking baby on my hands,” she wrote on her Twitter Thursday before sharing a photo of her napping tot in his stroller. “It’s hilarious…the wobble makes it look like he’s 3 drinks in!”

Launch the gallery above to see Duff’s bikini-clad vacay pics — and sexy Twitpics from other celebrities.

This year, Hollywood’s leading ladies have even more reason to have their nutritionists and trainers on speed dial.  The season’s hottest red carpet trends — sheer, cutouts, slits and mermaid silhouettes — have left starlets little wiggle room (literally) in the diet and fitness departments.

But believe it or not, those flawless figures strutting down the red carpet aren’t just the work of superior genetics — nor are they the result of endless gym marathons and starvation streaks.

The reality is, between filming, promoting and red carpeting, the red carpet’s biggest stars just don’t have time to live at the gym. That’s why they rely on the slimming and sculpting tricks of Tinsletown’s top health and fitness experts — and now you can too.

To find out the secrets behind some of the red carpet’s hottest bodies, we turned to the experts responsible for whipping them into shape.

Whether or not you are prepping for your own version of a red carpet moment, or you just want to get slim and sculpted for spring, check out the tricks celebrity trainers use to get their celebrity clients camera-ready in no time.

Click through the gallery for stars’ red carpet slim-down secrets.

What are your tricks for shaping up fast? Share your go-to diet and fitness tips.

 Check out more celebrity diet and fitness tips and tricks below.

From everyday errands, red carpet appearances to plain old work, the stars have been keeping busy in the last 24 hours.

Lucy Liu reported for duty on the set of Elementary in New York City on Wednesday. The 44-year-old, who plays Dr. Watson on the CBS series, stayed warm in a blue scarf and long coat as she braved the chilly weather.

Elsewhere in the Big Apple, AnnaSophia Robb donned another cute dress on the set of The Carrie Diaries. The young actress was spotted filming new scenes outside the famous Bergdorf Goodman store on Fifth Avenue.

On the west coast, Scott Disick was on daddy duty as he took son Mason out to lunch in Calabasas, Calif. The duo sported matching black jackets as they enjoyed the gorgeous sunny weather.

There’s also been plenty of star sightings across the pond. Justin Beiber, who is currently in town for his Believe tour, was spotted hitting up popular eatery Mint Leaf Restaurant in London.

Meanwhile, Taylor Swift donned a stunning black dress for the 2013 BRIT Awards. The singer’s ex, Harry Styles, and rest of the One Direction boys were also on the same red carpet.

Tom Hardy, Josh Duhamel and Hilary Duff were also spotted out and about in London.

For more of the day’s hottest star sightings, check out the latest edition of Celeb Snaps, above.

Hollywood is taking on London and Paris.

Tinsletown’s brightest stars have headed east for premieres, parties and — most importantly — fashion week, with some of the biggest twenty-somethings balancing work and play Across the Pond.

Hilary Duff was spotted exiting Heathrow airport on Monday in perfectly put-together airport attire. The new mother looked svelte as ever and has taken a break from her reported two-a-day workouts in Los Angeles.

Taylor Swift‘s ex Harry Styles walked home after a night out on the town in London. The One Direction singer left the Café Royal Hotel in Notting Hill in the wee hours Tuesday morning.

The 19-year-old heartthrob recently finally opened up about his split from Swift on Capital FM’s Max program.

“I’m OK. Thank you for asking,” Styles said. “I’m good.”

Meanwhile in Paris, Selena Gomez was promoting her film Spring Breakers with Vanessa Hudgens and Ashley Benson.

The newly-single starlet was spotted shopping and sight-seeing with her gal pals in the City of Lights, and even posed with fans for photos during her trip.

Click on the gallery above to check out the rest of the hottest star sightings.

The leading ladies of Tinsletown have been nonstop busy over the last 24 hours.

Between movie premieres, running errands and red carpet events, actresses and television stars are making sure to pack their schedules with appearances over Valentine’s Day week.

Emmy Rossum was on hand at the premiere of Beautiful Creatures in New York City on Monday evening. The actress sipped on Vikingfjord Vodka at the premiere’s after party at Cole’s.

Meanwhile on the West Coast, Khloe Kardashian Odom was spotted running errands in Los Angeles.

The star of Keeping Up With the Kardashians grabbed some Clear Scalp & Hair Beauty Therapy shampoo at the drugstore to ensure that her mane was picture perfect.

New mother Hilary Duff looked stunning on the red carpet of the PGA Tour Wives Association book launch on Monday evening. The event took place at The Fairmont in Santa Monica and commemorated the latest launch of the book, Beyond the Fairways and Greens: A Look Inside The Lives of PGA TOUR Families.

Click through the rest of the snaps above and tell us which your favorite is in the comments section below.

Pickles and ice cream may be the typical pregnancy cravings, but Hollywood’s finest are proof positive that the strange urges don’t stop there.

For Katie Holmes, cupcakes were the one snack that remained on her mind throughout her pregnancy with daughter Suri Cruise, now six. And she wasn’t particular about where she satisfied her sweet tooth: the former Dawson’s Creek star is known to be a patron at Sprinkles, Georgetown Cupcakes and Magnolia Bakery.

It looks like her love for baked goods was passed on to her offspring: Suri’s favorite indulgence is — you guessed it — cupcakes. They both love them so much, in fact, that the two were spotted decorating their own cakes for Holmes’ 34th birthday at Sugar and Plumm in NYC.

Jessica Simpson, meanwhile, had a hankering for Pop Tarts during her pregnancy with daughter Maxwell. She tweeted, “I had a buttered Pop Tart this morning, I’m giving in to my cravings.”

Another starlet who had a serious sweet tooth during her pregnancy was Hilary Duff. She craved all sorts of candies, but Red Hots held a special place in her heart while baby Luca was on board.

They certainly aren’t the only celebs had unusual pregnancy cravings. Which starlet hankered for fried chicken, and who only wanted ham-and-cheese sandwiches? Click through the gallery above to find out!

Whether they’re dining out or on a shopping spree, the stars know how to bundle up in style as they hit the streets from coast to coast on Wednesday.

Jessica Alba kept warm in an olive green coat, complete with faux fur detail, as she left trendy eatery Matsuhisa in Beverly Hills, Calif.

The 31-year-old brunette beauty looked refreshed and tanned, thanks to a recent getaway to Cabo San Lucas, Mexico, where the actress soaked up some sun with hubby Cash Warren and their daughters, Honor, 4, and Haven, 16 months.

On the East Coast, Anne Hathaway took a stroll along Madison Avenue in NYC wearing an winter ensemble complete with a billowy blue scarf, beanie and tan-colored coat.

Just the night before, the 30-year-old Les Miserables star donned a gorgeous Yves Saint Laurent tux for the annual National Board of Review Awards Gala, where her critically-acclaimed film was awarded with the prize for Best Ensemble.

Also in the Big Apple, a clean-shaven Andrew Garfield was spotted checking out of his hotel as a car waited nearby. The 29-year-old actor will soon be back at work on the The Amazing Spider-Man set slated for a May 2014 release.

In other celeb sightings, Hilary Duff enjoyed a pilates workout in Toluca Lake, Calif. The 25-year-old, who gave birth to her baby boy Luca about nine months ago, has been hard at work getting her pre-pregnancy body back.

“Working hard with my girl Viv @piloxing kicking my butt!” she wrote on Twitter.

For more of the day’s hottest celebrity sightings, check out the latest edition of Celeb Snaps above.

“It’s not a terrible thing if you’re either loved or hated. But honestly, I don’t care ’cause it doesn’t keep me from doing my s–t.”

Which Hollywood rebel-chick said she doesn’t give a damn about her reputation?

Was it Rihanna, Kristen Stewart or Ke$ha?

Find out in Celebuzz’s top quotes of the week.

Who was the young starlet that showed a glimpse of her thick skin?

It was Kristen Stewart!

The On the Road star has been dragged through the mud since news broke of her cheating scandal with her married Snow White and the Huntsman director (Rupert Sanders) back in July. But in an interview with Newsweek, she publicly acknowledged the issue that she has kept quiet about for months.

“I apologize to everyone for making them so angry. It was not my intention,” Stewart continued.

The apology came this week as we stare down the New Year. Could it be that Stewart is ready to move on from all the bad press and turn over a new leaf?

It sure seems that way — and she’s taking it one step at a time.

“It’s a little annoying having to be so compartmentalized. I go from box to box to box. Like right now, this is so crazy ’cause we’re out at a restaurant,” she told the magazine. “But I’m going out a lot more now. I was starting to get closed off and self-conscious, and I’m trudging forth into the world more often.”

We’re rooting for you, KStew! Hopefully this year will be a fresh start for the 22-year-old actress. After all, she and once-wounded beau Robert Pattinson seem to have patched things up.

Do you think Stewart can leave the past in 2012, or will it follow her into the new year? Sound off in the comments below.

Find out what else your favorite celebs had to say this week in Celebuzz’s Top 10 Quotes of the Week.