Mario Lopez is taking it off for Ellen!
The "EXTRA" host and former "Saved by the Bell" star stops by the studio on today's episode of "The Ellen DeGeneres Show" -- where he shows off his new line of underwear by stripping for the talk show host.
Lopez clearly isn't shy, unbuttoning his shirt and dropping trou midway through the interview ... and, at one point, even turning around to give the audience a look at the rear view.
Ellen has a knack for getting guys to strip on her show. Keith Urban, Ashton Kutcher, Alex Pettyfer, "X Factor" host Steve Jones and Josh Duhamel have all also showed some skin -- click their names to see the clips!
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