Carmen Electra's Suspicious Bikini Cover Up

4/27/2009 12:20 PM PDT
For a chick who thrives on showing off her incredibly hot body, it was more than just a shock when Carmen Electra -- who's rumored to be pregnant -- refused to lose the muumuu during a 6-way girl-on-girl-on-girl bikini dance off.

Carmen celebrated her 37th birthday at Wet Republic in Vegas yesterday -- she has yet to confirm if she has a belated gift on the way...