Justin and the One Direction guys like to let loose and go shirtless every once in a while — and we love it when they do! Who do YOU think has the hottest swimsuit bod?

Justin Bieber and the boys of One Direction are definitely not shy about showing off their bare chests. They all look so hot, we can’t pick a fav!

Since the guys have been hanging out in the studio together working on their new collaboration, maybe we’ll spot them ALL shirtless on the beach together this summer — wouldn’t that be the best?!

What do YOU think, HollywoodLifers? Which hunk is hottest in trunks: Justin Bieber or the One Direction guys?

— Kaydi Poirier

More Justin Bieber and One Direction

1. Justin Bieber Will Duet Twice With Usher
2. One Direction Strips Down At Sea — 15 New Pics
3. Justin Bieber and Selena Gomez’s Romantic Movie Date