See a New Photo of Mariah Carey's Baby Bump

Credit: Theo Wargo/

Mariah Carey showed off her baby bump Tuesday night at the 2010 Rockefeller Center tree lighting in NYC (her performance was pre-taped Nov. 19).

The singer -- who is expecting her first child with husband Nick Cannon -- is playing coy on rumors she's having twins.

"I'm not telling anyone!" she recently told Extra.

All about Mariah Carey!