Stars in Skivvies: The Sexiest Underwear Ads Ever

Not that we really needed an excuse to look at these hot celebs in their unmentionables, but this week marks the 20th anniversary of Mark Wahlberg's iconic strip-down for Calvin Klein so we had an extra-good reason


The athlete may wear many hats (he designed a line of bodywear for H&M earlier this year and modeled the pieces), but he sure doesn't wear much clothing: a revealing tank and boxer-briefs in this case.