04/18/2012 04:13 pm ET Updated Jun 18, 2012

Mark Wahlberg Underwear: Actor Strips Down For 'Pain And Gain' (PHOTOS)

Looking as hunky as ever, Mark Wahlberg, who started his career as a Calvin Klein underwear model in the early 90s, was seen on the set of his latest movie, Pain and Gain, in Miami on Tuesday and left very little to the imagination.

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