Alyson Hannigan has sure come a long way from her band geek days on the 1999 hit film "American Pie." Nearly 13 years later, the now-pregnant star sparkles in a skin-tight frock at the Los Angeles premiere of "American Reunion" Monday night. Plus, a pregnant Snooki will be returning to "Jersey Shore" for its sixth season, and Beyonce flaunts her post-baby bod in NYC. Talk about a hot mama!
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