WATCH: Randy Harrison Sings in His Skivvies

Known as the Skivvies, Broadway actor-musicians Lauren Molina and Nick Cearley strip down to their underwear to play "stripped-down" covers of pop songs. As a bonus, they often invite Broadway's finest to join in the half-naked harmony.

After five seasons as gay teen Justin Taylor on Showtime's groundbreaking drama Queer as Folk, recent special guest Randy Harrison had no problem showing some skin.

Removing his robe to reveal a tank top and skimpy skirt, the out actor performed a memorable mashup of "Music and the Mirror," "Dancing on My Own," "Dancing With Myself," and "I Wanna Dance With Somebody" with the Skivvies this past Saturday during an intimate concert at New York venue 54 Below. He then accompanied the duo on another mashup, putting a gay twist on "I Kissed a Girl."

No stranger to the New York stage, Harrison made his Broadway debut in 2004 as Boq in Wicked and most recently appeared off-Broadway in Harbor.

"I've been significantly more satisfied with the work I've been doing since Queer as Folk ended," Harrison told The Advocate in 2009. "It's been almost all theater, but that was my mostly my intention, so I'm doing what I always wanted to do."

Watch video of his Skivvies performances below.