Click the photo above and check out the gallery to find out who the ass belongs to.

Click any thumbnail launch the gallery and view all 22 photos:

Victoria's Secret model Alessandra Ambrosio posed for a sexy photoshoot on the beach in St. Barth on October 27, 2009. The supermodel and mother will be participating in the Victoria's Secret fashion show which returns to New York City this year.

Launch the gallery to take in all of Alessandra's views.

Click any thumbnail launch the gallery and view all 30 photos:

Julia Roberts is seen here sharing a laugh with co-star Javier Bardem as they film scenes for Eat, Pray, Love off the coast of Bali. Juila who turns 42 this week, stripped down to a string bikini as she cozied up to her on-screen lover.

The big-screen adaptation of Elizabeth Gilbert's best-selling book tells her story of recovery after going through a painful divorce with her first husband.

She decides to go on a journey of self-discovery, starting with Italy (eat), staying in an ashram in India (pray) and finally Bali, where she finds love with her second husband Felipe.

Click any thumbnail launch the gallery and view all 17 photos:

Its was another day at the beach for Britney Spears, her children, boyfriend Jason Trawick and Britney's father Jamie Spears.

The singer is on vacation in Mexico, doing a little celebrating over her number one single "3." She just finished shooting the music video for the single, and Britney sent out this tweet over the weekend: "I am so happy y'all love it because I do this all for you. I can't wait till you see the video!"

We can't wait to see it either, it sounds hot!

Gallery Info: Britney Spears on vacation in Mexico with her family

Click any thumbnail launch the gallery and view all 9 photos:

Click the photo above to find out who it is.

Click any thumbnail launch the gallery and view all 25 photos:

Well well. Tara Reid has chosen to pose nude for Playboy magazine. The question is, how much Photoshop will have to be used to cover up the botched liposuction procedure Tara had in 2004?

In Touch Weekly reports that Tara posed entirely nude for the popular magazine at a private residence earlier this week in Santa Monica, CA.

The "actress" seemed to let go of the nerves as the day went on. "She was a bit insecure about her body when they first started," says an insider. "She looked great and finally got into the groove."

Tara had said in the past that she would never pose for Playboy, saying, "I know there are problems with my stomach. There are bumps on it, it's uneven, but it's not that bad. My stomach scars are my battle wounds."

Famous last words Tara. So are people going to buy the issue out of curiosity, because we've already seen the boob.

Gallery Info: Tara Reid and her boyfriend vacationing in St Tropez

Click any thumbnail launch the gallery and view all 20 photos:

These bikini shots of Ashley Greene have been making their way around the internet today, and we thought we'd post them because Ash really knows how to rock the bikini! She definitely looks younger in the photos.

She does like the all-American girl in these pics, and little va-va-voom in some of the other pics. I wonder if she keeps that look with her knew hair color. Can't wait to see a photo.

Click any thumbnail launch the gallery and view all 24 photos:

Click the photo above to find out who it is.

Click any thumbnail launch the gallery and view all 21 photos:

30 Rock actress Katrina Bowden took a dip in the ocean in her bikini on a sunny day in South Beach with gentleman friend. The actress is in Miami to celebrate her 21st birthday at LIV nightclub.

Check out all of Katrina in the gallery.

Click any thumbnail launch the gallery and view all 23 photos:

Ooops. Did my nipple just slip out of my bathing suit? Now why would it go and do that?

Sophie Monk looked great as she frolicked around a private Southern California beach on September 27, 2009. The Australian bombshell looked fantastic in her skimpy green string bikini, and obviously has no qualms with showing off her assets.

I'm sure teen and college boys around the globe are thankful for that.

Click any thumbnail launch the gallery and view all 7 photos: