The Hottest Celebrity Bodies of 2012

Best Celebrity Slimdown: Pink

The rocker mom gained 55 pounds during pregnancy, courtesy of some cheesecake (and lots of it!). With the help of celebrity trainers like Jillian Michaels and Jeanette Jenkins, she whipped herself back into shape, and is once again the proud owner of a set of sexy, flat abs.

Runner-up: Kelly Osbourne