Check out before and after photos of Kate Middleton, Kim Kardashian, Halle Berry and other stars' hottest post-baby bodies
There's only one person responsible for helping Faris get her smokin' hot post-baby body back in record time: her son, Jack! "I think [my weight loss is] from hauling around the little guy," the What's Your Number? actress -- who welcomed Jack with husband Chris Pratt in July -- told E! News. "I'm trying to do it without help, so it's been a lot of lifting."