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Katy Perry, Salma Hayek, Kim Kardashian

Johannes Simon/Getty Images; Marco Prosch/Getty Images; Florian Seefried/Getty Images

It looks like good things do come in threes, at least where these fair fräuleins are concerned. The stars were all in Deutschland doing their best Bavarian babe impersonations in honor of Oktoberfest.

Katy Perry busted out a polka-dot dirndl for Germany's variety show Wetten Dass…? last week. "God knows I've got the rack for it." she tweeted.

And she's not the only curvy lady getting in on the oom-pa-pa action...

Salma Hayek practically spilled out of her low-cut dirndl during a visit to the same show.

Finally, Kim Kardashian got in the spirit during a stopover in Munich last month, donning one of the beer wench dresses and braids for the annual celebration—even going so far as to tweet, "I love Germany, its Vonderfull here!"

Judging by all the cleavage on display, who's gonna disagree? Now which busty babe looks best in her Oktoberfest costume? Weigh in below, then check out all the stars getting into the spirit in our Celebs Celebrate Oktoberfest gallery!