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Katy Perry

Johannes Simon/Getty Images

Ever heard of Oktoberfest? It's a German festival that involves plentiful libations, funny and colorful dresses and ample shows of cleavage.

See where we're going with this?

Yep, like a moth to a flame, Katy Perry found herself traveling abroad over the weekend, appearing on Germany's Wetten Dass…? to show those Deutschlanders how to do it up right.

While appearing on the show, Perry performed two songs for the crowd, the first, obviously, being her hit "Teenage Dream." The second was the more notable of the tunes, as, after a quick costume change, Perry reemerged on stage in a traditional Bavarian dirndl to perform a Sound of Music-themed "Edelweiss."

Ever the good sport, the 25-year-old fiancée to Russell Brand also partook of the festivities, taking several swigs of beer and graciously accepting (and wearing) a giant heart-shaped cookie from the show's hosts.

Prior to her Munich performance, the songbird did her best to get into the spirit of things.

"I'm starving, what should I have for lunch…Beer? Time to bust out my wench dress. God knows I've got the rack for it. #oktoberfest," she tweeted.

And, just because she's Katy Perry and can't help herself, she added the following:

"I can see your weinerschnitzel through your lederhosen!" That's our girl.