AceShowbiz -

Mario Lopez is stripping down to his underwear for a sexy new campaign. The season three runner-up of "Dancing with the Stars" is promoting his new line of underwear, Rated M, which is officially launched on Thursday, December 1, and a promo video featuring a look at the photo shoot has been shared.

In the less than one minute preview, the 38-year-old told Extra! that the "M" in his label "stands for masculine, modern, Mario... make it whatever you want it to be." He also shared a bit about how he prepared himself for the steamy photo shoot, dishing about his workout and diet regimen.

One photo of Mario wearing nothing but a pair of boxer briefs made its way out via E! Online, which mentions that his undies' waistband reads, "For manful men and their very special guests." The actor is also featured in other shots leaning against gym equipment and striking a pose in front of a wall of wrenches.

Rated M is available for purchase on underwear retailer Fresh Pair. Mario himself has been busy promoting the line on Twitter, writing "My new underwear line @RatedMOfficial is now available on https://Freshpair.com @freshpair - get yours today! Its awesome, checki it out!" in one post and "Happy with the way the product turned out!!! :)" in another.