Olivia Munn: My Topless Scene in Magic Mike "Didn't Feel Gratuitous"

OLIVIA MUNN as Joanna in Warner Bros. Pictures' dramatic comedy "MAGIC MIKE." Credit: Claudette Barius/Warner Bros.

Olivia Munn doesn't play a stripper in Magic Mike, but that didn't prevent her from stripping down onscreen!

In an interview with Vulture, the actress, 32, admits she "forgot" about her topless scene "until I saw it at the premiere."

"The way it was shot didn't feel gratuitous -- I think that's what every actress says, right? There are very few directors I would ever do it for. Also, my character was getting out of the shower and to keep it as realistic as possible, I didn't wear a shirt in the shower. The day of the shoot, I locked it down. I only wanted the people who absolutely had to be there. I even cleared out video village, which you'd normally forget about."

Unlike her costars Channing Tatum, 32, Matthew McConaughey, 42, Alex Pettyfer, 22, Matt Bomer, 34, and Joe Manganiello, 35 -- all of whom wore barely-there thongs to play a troupe of male strippers -- Munn was more shy in-between takes. "When they'd yell 'Cut!' I'd get my robe. The guys? They'd still be all asses shaking, walking around. They didn't put their robes on ever."

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In Magic Mike, Munn's character, Joanna, is afraid of commitment -- something the actress has witnessed firsthand. "I based her on an ex-boyfriend. It's that guy you're dating who's fun, cute, you have great sex, and then three weeks into it you go, 'So, my friends are doing this little party. . .' and he's like, 'Whoa! What? I thought we were just having fun,'" Munn tells Vulture. "When women do that? They're a bitch or a slut. I wanted her to be neither. She's a sexual person. She's doing what she wants."