It's true: Kelly Kapowski of "Saved By the Bell" once shied away from meat in real life. But Tiffany Thiessen's pregnancy turned her into a carnivore. "I used to be a vegetarian and I'm eating red meat now. It's weird," she told StyleList.com in March. "I crave a lot of fruit and a lot of dairy, which I never used to drink. I'm definitely listening to my body, but it's been a big transition."
Not all stars succumb to the urge to indulge. While pregnant last year, "Keeping Up With the Kardashians" star Kourtney Kardashian told People magazine, "I have more healthy cravings than my normal eating habits, like I crave fruit and cold things like smoothies." After the birth of son Mason Dash, Kardashian took her healthy lifestyle to the extreme -- determined to get back her pre-baby body for a photo shoot, she exercised twice a day and barely ate, and ended up collapsing while running on the beach. The lesson: everything in moderation, even in Hollywood.