It's swimsuit season in Hollywood, and that means the stars have been working hard on their beach bodies. On People magazine's latest cover is heartthrob Zac Efron - with his shirt off, of course - as he tops the list of 50 "most amazing bodies". "He was chosen because he's not that hard to look at as you can imagine. But also because he's gone through an amazing transformation," says People staff editor Michelle Tan.

Also on the list: Jennifer Love Hewitt, rapper Common, Hugh Jackman, Jake Gyllenhaal, Kellan Lutz, Ryan Philippe and Gabrielle Union. Tan says the issue also provides tips and advice for readers to score their own six-pack, or bikini bod just like their favorite star.