The scruffy Twilight star was dressed casually wearing a hoodie, hat and jeans as he joined friends at Claridge’s restaurant in London on May 13. The birthday boy was joined by pregnant pal Sienna Miller and Les Miserable actor Hugh Jackman.

Noticeably missing was his girlfriend, Kristen Stewart. Where was she?

Kristen Stewart and Robert Pattinson's Date Night

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Although Kristen is in London, the actress is busy promoting her latest flick, Snow White & The Huntsman. It’s possible that the camera-shy actress may have slipped in the back to avoid the paparazzi.

Up next, Pattinson heads off the Cannes for the premiere of his new film Cosmopolis. The film is about a wealthy bad boy, Eric Packer (Pattinson), who tries to get a haircut in New York City. But as he’s on his way, he encounters obstacles which keep him from getting his trim.

Regardless if they’re walking down the aisle or not, many fans are most dying to know if Tom’s best friend, Twilight hunk Robert Pattinson, will be the godfather of the couple’s new baby.

Kristen Stewart Hangs Out with Sienna & tom

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Sienna’s recently opened up to British Vogue [via The Daily Mail] about her excitement in becoming a mother. She said, “I’m feeling fine. It’s all progressing nicely and it’s very exciting. It’s nice to start a new decade.”

As for anything else about the baby, Sienna’s keeping it all mum!

“I’m in my second trimester, so I’m I-can-talk-about-it pregnant, even though I’m under strict instructions not to say anything as it would completely defeat the point of everything I’ve tried to achieve in the last eight years,” she added.

It was reported in early January that Sienna, 30, and her beau Tom Sturridge, 26, were expecting their first child. Then just this week, Life & Style claimed that the Factory Girl was engaged, and though it’s only a report, she has been sporting some diamond bling on her wedding ring finger. “They’re engaged and really happy,” a source close to the couple told the magazine. “Her family is pleased, as they absolutely adore Tom.”

Sienna, 30, and Tom, 26, were first spotted together this past year. Tom, whose most popular role was in Pirate Radio, is best friends with Twilight heartthrob Robert Pattinson. Wonder if RPattz will be the best man or the god father?

sienna & tom stroll through london

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As we all know, this isn’t the first actor Sienna has been romantically connected with, but this is her first child. Prior to Tom, the actress dated Jude Law (twice), Notting Hill star Rhys Ifans and Brothers & Sisters actor Balthazar Getty.

Though this report is still speculative, Sienna is sporting some diamond ring bling on her wedding ring finger. “They’re engaged and really happy,” a source close to the couple told the magazine. “Her family is pleased, as they absolutely adore Tom.”

The source added to L&S, “He proposed to Sienna during a romantic trip to Paris after Christmas. He filled their hotel suite at the Ritz with flowers and presented her with a vintage Victorian ring. It was incredibly romantic — she was blown away.”

sienna & tom stroll through london

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Sienna, 30, and Tom, 26, were first spotted together earlier this past year. Tom, whose most popular role was in Pirate Radio, is best friends with Twilight heartthrob Robert Pattinson. Wonder if RPattz will be the best man?

What do you think of this romantic rumor? Do you support Sienna’s engagement or is it too soon? Sound off in the comments. 

As we all know, this isn’t the first actor Sienna has been romantically connected with, but this is her first child. Prior to Tom, the Factory Girl actress dated Jude Law (twice), Notting Hill star Rhys Ifans and Brothers & Sisters actor Balthazar Getty.

The couple were first spotted together earlier this past year. Tom, whose most popular role was in Pirate Radio, is best friends with Twilight heartthrob Robert Pattinson. Could RPattz be the godfather? We hope so!

rob & tom walk dog

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Tom is also starring alongside Rob’s girlfriend Kristen Stewart in On the Road as Carlo Marx, hitting theaters sometime in 2012. New baby and a new movie, Tom is already having the best year ever and we’re only a week into it! 

As we all know, this isn’t the first actor Sienna has been romantically connected with, but this is her first child. Prior to Tom, the Factory Girl actress dated Jude Law (twice), Notting Hill star Rhys Ifans and Brothers & Sisters actor Balthazar Getty.

But Scarlett, and possibly Mila, are not the only major stars who have gone through this. Just ask Vanessa Hudgens, Miley Cyrus, or Jessica Alba.

These are some of the 50 female celebrities whose phone and emails have apparently been hacked.

Unless you are Julianne Hough, and are pretty much the most innocent starlet around, or at least has heard of the “delete” button (just kidding!) many of Hollywood’s hottest gals might be getting nervous.

Check out our celebs who have been hacked gallery.

Tom paired his T-shirt and jeans with a camel-colored hat over his long locks. Sienna also went hobo-chic wearing an oversized army green jacket, a loose-fitted tee and a big scarf. Who do you think is the most fashionable couple in Hollywood? Sound off in the comments. 

As we all know by now, Tom has a famous friend, Twilight heartthrob Robert Pattinson!

Back in July, the boys were snapped walking R. Pattz’s dog Bear for a walk on a sunny day in California. The actors became best friends when they met at the Harrodian School in suburban London and both “starred” in several films together before Rob hit it big with Twilight. Click the pics below and determine who’s hotter: Rob or Tom?

rob and tom walk bear

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Although Kristen, 21, arrived and left separately from Sienna, 29, and Tom, 25, at London’s posh Groucho Club, the three were definitely hanging out together – UK’s Daily Mail reports that the trio had dinner at the St. John Hotel before heading to the club.

Kristen wore her trademark jeans and t-shirt to the club with Tom wearing a similarly casual outfit of jeans and Supreme t-shirt with Lady Gaga‘s face printed across his chest. Meanwhile, fashionista Sienna looked casual chic in a white Isabel Marant fluffy jacket and an of-the-moment chambray button-down.

Tom became best friends with Rob when the two met at the Harrodian School in suburban London. The two “starred” in some films together before Rob hit it big with Twilight: Both Tom and Rob played children in 2004′s Vanity Fair, although Rob’s role as Reese Witherspoon‘s son was cut from the final film. Back in 2010, Rob drove across the United States with a group of friends to visit Tom and KStew on the set of On the Road.

Kristen arrived in London earlier this week to attend Galmour UK‘s Women of the Year Awards, where she presented her and Tom’s On the Road co-star Garrett Hedlund with an award. Her beau Rob is currently filming Cosmopolis in Toronto. Check out photos of Rob filming from earlier this month below.

rpattz gets dapper on 'cosmopolis' set (photos)

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Sienna has been dating Tom since March of this year. She has previously dated Jude Law and Balthazar Getty.

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Rob is back in London where he celebrated the premiere of Water For Elephants Tuesday night. So what is Sienna’s connection?

She is still dating Tom Sturridge, Rob’s best friend! The two have been close for several years, before she and Jude Law got back together this last round, and their friendship turned into something more several months ago. 

Tuesday night Miller left The Royal Haymarket Theatre after after performing in The Flare Path (which she is supposedly fantastic in) to go meet up with R.Pattz and Tom at the Home House Private Members Club elsewhere in London. Reese Witherspoon was also in attendance for the low key celebration.

rob & reese's london premiere!

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Sienna was then seen hopping into an awaiting car with Tom where they headed off into the night.

It’s been a while since Tom and Rob have seen each other! Sturridge has been over in London with Sienna while Rob finished up filming Breaking Dawn.

You can see Tom on the big screen with Rob’s GF Kristen Stewart in On the Road. Don’t you love all the Brit-pack connections?

We would love to be a fly on the wall for a Rob, Kristen, Sienna, and Tom double date! Wouldn’t you?

The model-turned-actress-turned-fashion designer was spotted leaving a performance for Flare Path while donning a chic green jacket from her fashion line, Twenty8Twelve. The parka’s shape is perfectly proportioned, managing to pull off the baggy spring trend without losing any feminine appeal.

Army jackets like the one Sienna is wearing are some of the most lusted-after items for spring. Mix in this jacket with skinny jeans and boxy sweaters like the look Sienna is rocking or slip it over flirty spring dresses for an edgier look.

Sienna is currently staring in Flare Path at the Theater Royal in the Haymarket section of London.

Want more Celebuzz style notes? Check out previous editions of Love the Look and play fashion critic in the comments.

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OK ok, let’s not get ahead of ourselves here. Still, Sienna and Tom — who have four years difference between them, as Sienna was born in 1981 compared to Tom’s 1985 — looked to be quite happy together as they grabbed a cup of coffee in London over the weekend. Sienna looked stylish as usual with a pair of sassy sunglasses, while Tom’s accessory of choice was a brown fedora. Quite the fashionable couple!

Tom has previously been romantically linked to Carey Mulligan, while Sienna’s dating life has been much more public. She has had an on-and-off relationship with Jude Law for years, and also a headline-making fling with married actor Balthazar Getty.

Sturridge and Pattinson have been friends for years, and recently he was working with R-Pattz’s lady Kristen Stewart as the two filmed On the Road together.

The Factory Girl star highlighted her eyes with black eyeliner along the outer corners of her eyelids and a simple swipe of shimmery white eye shadow. Sienna breathed some warmth into the look with some rose blush and a light swipe of pink lip gloss. Finally, the actress finished off the look with lots of black mascara on her top and bottom lashes.

While her natural make-up looked flawless the real secret to Sienna’s look was her winning smile and great confidence. Hey, you have to be pretty happy to be able to rock minimal make-up in public!

Can’t get enough of Love the Look? Check out previous editions in our Love the Look gallery.

A rep for Law tells People magazine that the Alfie co-stars and on-again, off-again couple have once again severed their romantic ties:

“I can confirm that Jude Law and Sienna Miller are no longer in a relationship.”

So what happened? According to a friend of Law’s, who says that the split occurred several weeks ago, their relationship just ran out of steam:

“It was an entirely and end-of-the relationship decision. It had run its course.”

Law and Miller initially began seeing each other in late 2003, becoming engaged on Christmas 2004, but split up in 2006. The pair had reignited their relationship in 2009.

Do you think they’ll stay broken up this time? Hit us up with your predictions in the comments section.

The G.I. Joe starlet has often made headlines thanks to her off-screen activities, but Celebuzz is all about celebrating the positive. When there’s a red carpet, few can top the beauty of Miss Miller. Whether she’s rocking a pixie cut or long, flowing blonde locks, Sienna knows how to work it in a wide array of styles.

Take a look at Sienna’s sexiest outings! Then, tell us in the comments: Where do you think Sienna ranks among Hollywood’s top beauties?

Sienna gives Little Red Riding Hood an It Girl update with loose waves, black tights and a leopard dress that peeks out from beneath her cherry robe. In lieu of a picnic basket for grandma, Sienna totes a slouchy quilted chain purse. Just looking at her gets us into the holiday spirit!

Click through for a closer glimpse at Sienna’s red cape, Mila Kunis’ smoky eyes and shots of more stars who made the cut for Love the Look.

Click through the photo gallery to see 10 more famous couples who just can’t quit each other.

Do you believe in second chances when it comes to love? Let us know in the comments section.

New shots show a black bikini-sporting Sienna holding Jude’s hand en route to an inflatable dinghy ride with another tourist couple. A gentlemanly Jude even helps his lady onto the shaky boat!

Are you happy about the Jude and Sienna reunion? Let us know in the comments after checking out the photo gallery. For more shots of stars frolicking in their bikinis, check out our Celeb Bikini Safari.

Jude Law and Sienna Miller celebrated their enchanted love in Italy on Thursday, engaging in a virtual PDA orgy on the sands of Ponza.

Or maybe Sienna had just had a mishap in the water, and Jude was administering mouth-to-mouth resuscitation. Yeah, maybe that’s it…

Turn down the lights, pour yourself a glass of wine, throw on the Barry White CD and click through the photo gallery of Sienna and Jude’s steamy make-out session. It’s about to get sexy in here…

The two blonde darlings enjoyed an outdoor lunch the morning after going public with their new romance at the Metropolitan Museum Costume Institute Gala. Luckily for them, they were shrewd enough to avoid being photographed while eating.

Sienna looked lovely in a red romper and black tap shoes. It is pretty unfair that she can eat and still look great in a bright-colored romper without looking like a semi-inflated balloon (what, that doesn’t happen to you when you wear rompers?).

Click here for more photos and check out all our paparazzi pictures at Paparazzi-Razzi.