Some stars, like Oprah Winfrey, Kirstie Alley, Jessica Simpson, and Christina Aguilera, are as famous for their ever-changing bodies and weight ups and downs as for their talent
Jennifer Love Hewitt
Hewitt's physical ups and downs have come with some emotional highs and lows. In 2007, she was devastated when unflattering bikini pictures surfaced; the incident inspired her to get back in shape. Her weight has fluctuated since then, but she tries not to obsess. "I never look at a scale, I have no idea how much I weigh -- I never pay attention to that stuff. I go sort of on how I feel in my clothes...If I feel good in them, then I'm happy and it doesn't really matter what anybody else thinks."
Credit: Jeff Kravitz/FilmMagic; Paul Morigi/WireImage; Jerod Harris/WireImage