Do you complain? If you do, you’re going to upset Beyonce. Do you chew gum with your moth open? Oprah Winfrey doesn’t want to be within earshot of you.

Or, perhaps you’re a high roller. In that case, The Avengers star Mark Ruffalo cannot stand you.

Celebuzz has compiled a list of 10 stars’ pet peeves.

Click the gallery to learn what rapper hates ”button up shirts with hoods” and which singer cannot stand when you don’t wipe down a wet sink.

Talk about waltzing the weight off.

Bristol Palin wowed the crowds not only with her Cha- Cha but also with her new super slim figure on the Dancing With The Stars premiere.

But she isn’t the only celebrity who has Paso Doble-d the pounds away. Celebuzz is looking at the weight loss winners of the reality dance show.

So who dropped the most?

Kelly Osbourne, 27, had a complete body makeover when she was a contestant in 2009.

She lost 40 pounds through a combination of gruelling dance rehearsals and learning how to eat healthier, which she thanks her dance partner Louis Van Amstel for teaching her.

But by far the biggest weight loss wonders were Kirstie Alley, 61, and Gladys Knight, 68.

Alley lost a whopping 100-pounds in total, but it wasn’t all from training on the show. The former Cheers star put it down to organic food and dance.

Knight, on the other hand, appeared to shrink in front of viewers eyes. The legendary singer shed an incredible 60 pounds during her stint on the 14th season of the show.

Look through the gallery to see which other stars pulled off a perfect 10 in the weight loss wars.

With the news of John Travolta‘s wife, Kelly Preston getting pregnant with a “miracle baby” at the age of 47 and Sandra Bullock adjusting to her life as a new single mom at the age of 45, we thought it was high time to take a look at some famous mommies who had kids (adopted and biological) after their 40th birthday.

It’s no secret that having a child after the age of 35 can run some health risks for women and their unborn baby, but if these famous women are proof of anything, it is that you can be a successful and healthy mom as you enter your golden years.

Click here to see our list of the top 15 famous mothers over the age of 40.