Kelly Clarkson – 37 Pounds
Kelly Clarkson was shot into famedom when she won American Idol in 2002. Following this, she was instantly thrust into the bizarre world of Hollywood and her days would be filled with recording studios, concerts, promotions, etc. As a result of this, her health was slipping and she was gaining weight.
Clarkson later revealed that she lost a lot of weight due to an autoimmune condition and a thyroid problem. She says her glam squad (and spanx) are also to thanks for her slimmer figure. Even though she’s now 37 pounds lighter, she says body positivity is still her main priority. “For me, it wasn’t really [about] the weight—for me, it was that I’m not on my medicine anymore,” she told Extra.