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Rumer Willis has been changed by Dancing With the Stars. Physically.

The House Bunny star took the stage Monday in a revealing Cher-inspired disco outfit to dance the cha cha cha to Gloria Estefan's "Turn the Beat Around."

"It's definitely changed from dancing five or six hours a day," Rumer told E! News' Ali Fedotowsky about her rocking body. "It's pretty tough when you're jumping up and down and shaking it everywhere."

But don't expect many costumes similar to the midriff-baring disco number you see in the video above.

"This was very exposed for me. I tend to like to keep myself a little more covered up," Rumer told us. So don't expect a Striptease moment, but there may be some callbacks to some films from mom Demi Moore and dad Bruce Willis...or a Striptease moment for Val Chmerkovskiy.

Rumer and partner Val scored a 33 from the judges. "I'm super proud," Val said of his partner. "She's fearless."

As for next week, things are going to get intimate and the dance with more depth. Watch the video above for more, including what's going to happen to that disco outfit and whether Rumer's a single lady!

Dancing With the Stars airs Mondays at 8 p.m. on ABC.