Mark Wahlberg Boxer Briefs Pictures in Miami

Mark Wahlberg Strips Down to Boxer Briefs and Teams Up With GNC

Mark Wahlberg looked ripped in boxer briefs and a white tank top on the set of Pain and Gain in Miami.

Mark Wahlberg continued to show off his fine form stripping down to underwear and a tank top on the set of Pain and Gain in Miami, FL, yesterday. Marky Mark's Calvin Klein underwear ads debuted more than 20 years ago and he still looks fantastic in his boxer briefs. Mark bulked up even more than usual for his new movie, in which he costars with Dwayne "The Rock" Johnson, and fans can expect to see a lot of those famous muscles when Pain and Gain hits the big screen. Mark will also soon be helping others maintain their own fine forms thanks to MARKED, the new line of nutritional supplements he is developing with GNC.

The actor has also been enjoying his downtime while in Florida. Mark went shirtless to hit the beach with his family, including his hot bikini-clad wife Rhea Durham and their four kids, for the past two weekends.