Kelly Monaco and Melanie Brown

Melanie Brown and Kelly Monaco's dance routines are about to get spicier — the Dancing With the Stars alums are headlining a topless Las Vegas musical called PEEPSHOW.

Monaco, who won Dancing and plays General Hospital's Sam McCall, and Brown, a Spice Girl and Dancing runner-up, will appear in the burlesque-style performance set to open in March at the Planet Hollywood Resort and Casino, People reports.

Brown and Monaco won't be topless, but the showgirls sharing the stage with them will be. Brown says she'll be "scantily clad, but in a classy way."

Monaco, who has previously posed for Playboy, plays "Little Bo Peep," a timid, lonely girl guided by Brown's character, "Peep Diva."

"This is an original show," Brown says. "The Peep Diva is a diva, but it's all about empowering Kelly's part."

She notes that as a Spice Girl, "I would bring guys on the stage and whip them, so I think I've always been slightly naughty."

The Dancing stars will lead the show for several months, then other celebrities are expected to take over PEEPSHOW.

"I'm very nervous and very excited," says Monaco.