Stephanie Pratt Was Bulimic!

Hills star Stephanie Pratt opens up about the pressure to be thin alongside the "Hills" skinny co-stars. In the new issue of Us Weekly she talks about hating her body and her terrifying secret struggle with bulimia.

The 5-foot-7 23-year-old reveals she began bingeing and purging after watching a scene she shot with Lauren Conrad in 2007 after first joining the cast: "I was horrified. I remember saying, 'I can't believe how huge I look walking over to Lauren. Another time, when filming in Hawaii in bikinis, the size 0-2 Pratt –- in a bikini and cover-up -- asked costar Audrina Patridge, "What looks better, 'shirt on or off?'" Patridge said 'On.'" Says Pratt, "The producers never put pressure on us to lose weight," but adds, "It's embarrassing working with skinny girls.

The new issue of Us Weekly hits stands today.

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