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JORDIN SPARKS
Another star who flaunted her new body on Twitter? Sparks, who posted this shot of her colorful two piece, writing, "I don't know why but my bathing suit reminds me of fruity pebbles." The American Idol winner told PEOPLE she got in shape thanks to "a shift in my thinking. Instead of talking about being more active, I just got up and did it."
TORI SPELLING
Before a dip in the hot tub with hubby Dean McDermott, Spelling decided to cool off – in a serious way! "It actually feels amazing to lay in snow and then dip into the hot Jacuzzi!" she Tweeted, flaunting her snow-melting figure.
JESSICA & ERIC
"Calvin Klein in its prime, oh thank God for this behind!" gushed Jessica Simpson about her fiancé Eric Johnson's, ahem, cheekier assets.
KE$HA
Tweeted the star about her brightly colored bikini top, which resembles the '80s designer's signature look. "Im bringin that s–t back."
MARK & CORY
How do the Glee guys get so buff? Mark Salling showed that it's all about the weights, taking this sneaky shot of Cory Monteith hitting the gym on a big day. "Push it!!!!!! Oh it's your birthday? Too freakin bad!!!" he Tweeted.
PARIS HILTON
"Beach babe having fun in the sun!" Hilton wrote when posting this – and a few other – bikini shots during a recent vacation with now-ex Doug Reinhardt to Anguilla.
J-WOWW
Someone's getting into fist-pumping shape! Jersey Shore's Jenni "J-Woww" Farley flaunted her ripped abs and ample assets, asking,"Bikini ready?! Maybe alil more work."
KRISTIN CAVALLARI
"Vegas was a blast!" joked the Hills star while hosting a splashy bash at Liquid Pool Lounge in Sin City's Aria Hotel and Casino.
KATHY GRIFFIN
While promoting cervical cancer awareness, Griffin flaunted her bikini body, proudly proclaiming on Twitter, "Tell cancer to SUCK IT!"
SINORICE RICE
That's one way to stay, um, on point! The New York Giants wide receiver showed how he stays sharp, writing, "Acupuncture! Painful at first. It releases Sore/Tight Muscles."
AUBREY O'DAY
"Swimsuit time," the former Danity Kane singer tweeted about this revealing shot of her in a black suit that's sure to give her some "Damaged" tan lines!
ASHTON KUTCHER
Sometimes, the skin celebs show isn't always their own. Kutcher gave his followers an intimate look at his life, posting a shot of wife Demi Moore's bikini-clad butt. "Watching my wife steam my suit while wearing a bikini. I love God!" he bragged, causing Moore to tweet back, "He is such a sneak and while I was steaming his suit too!"
CASSIE
Singer Cassie joined in on the (barely dressed) fun, posting this portrait of her in fishnets and a cut-out suit. The singer is no stranger to Twitpics, having uploaded a shot of her radical new do – a shaved head!
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