Photos: See all of Justin Bieber's ab-tastic Calvin Klein ads

24/7 friendly Customer Service Calvin Klein - Mark Wahlberg in a 1992 advertising campaign for Calvin Klein Underwear., calvin klein ad

Justin Bieber flaunts his bits for Calvin Klein ad

24/7 friendly Customer Service Calvin Klein - Mark Wahlberg in a 1992 advertising campaign for Calvin Klein Underwear., calvin klein ad

Justin Bieber flaunts his bits for Calvin Klein ad

Kendall Jenner Poses in Bikini for LOVE Magazine

Justin Bieber's bare chest controversially covers 'Men's Health

Kendall Jenner and Justin Bieber cozy up in Vogue

Justin Bieber Reveals His Ab-tastic Calvin Klein Workout, But Did

Full Sized Photo of justin bieber flashes abs at calvin klein

Photos from Justin Bieber's Shirtless Pics