Don't expect Miss USA to always be prim and proper.  Reigning pageant champ Alyssa Campanella, a self-confessed "science geek," attended "The Avengers" premiere at Tribeca over the weekend wearing a very risque ensemble.

Campanella, 22, wore colorful red pants with a white jacket. She didn't wear a blouse and opted to reveal quite a bit of cleavage instead.

The highly anticipated "Avengers" headlined the closing weekend at Tribeca. It opens wide on May 4 and is expected to take in $150 million during its first weekend of release.

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