When Anne Hathaway wanted to get into killer shape for her upcoming movie, 'Bride Wars,' she turned to celeb trainer David Kirsch, who's also honed the bods of ferosh celebs like Heidi Klum. In the new issue of Glamour, on stands Aug. 5, David and Anne reveal his fat-busting tricks, like oblique crunches and something called the "platypus walk"?

It "lifts the butt up a good inch higher, working the inner thighs," he says. 

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You've seen Valerie Bertinelli on the inspirational ads for the Jenny Craig Weight Loss system, and now she's inviting real women to join her! Just shoot a video, like the ones here, telling Valerie what your "ideal size" is and what it means to you, and send it to Jenny Craig's Ideal Size Challenge.

Three winners will get a chance to meet Valerie and possibly appear in a Jenny Craig ad, along with $1,000 and a year of free plan food and maintenance. For more information, visit www.myidealsize.com.

Copyright 2008 VH1 / Michael Yarish / Frazer Harrison / Getty Images

Former plus-sized model Toccara Jones is skinny minny now! Toccara showed off her super-thin new frame at last night's 2008 BET Awards. 

Making her TV debut on "America's Next Top Model: Cycle 3," the voluptuous beauty bragged about her curves, but later competed on VH1's "Celebrity Fit Club 2" in 2005 to try and slim down.

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Copyright 2008 Shape Magazine

So is she or isn't she? ASHLEE SIMPSON is playing coy about those pregnancy rumors, but the singer is showing super-flat abs in a red-hot bikini on the cover of the new Shape magazine, on stands May 5th. Inside, she talks about her new exercise and diet routine.  

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Copyright 2006 Getty Images / Getty Images

JANET JACKSON floored everyone with her noticeable weight gain earlier in the year, but she revealed to ET how she lost the weight -- and why she gained it in the first place.

"I put on the pounds for a film I was to do ... which a lot of people didn't know," Janet tells our KEVIN FRAZIER. "They wanted a full-figured woman."

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