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Madonna

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We suppose the real news here would be if Madonna had actually decided to keep herself covered up.

But, alas, just days after she opted to bare her breast while performing "Human Nature" in Istanbul, the 53-year-old singer decided to expose another part of her anatomy in Italy on Tuesday.

Yep. The Material Girl decided to, um, express herself yet again on stage while belting out the same song at Rome's Stadio Olimpico.

With her back to the audience, Madge proceeded to unzip her pants, pull them down and expose her rear.

Hmm. First a boob, now her butt.

We shudder to think what's coming next.

PHOTOS: Celeb Wardrobe Malfunctions