Don’t let the comic chemistry fool you, tension is rising between actress Tina Fey and her 30 Rock co-sar Alec Baldwin.

Chatty spywitnesses claim the Emmy-winning entertainers have repeatedly bumped heads behind the scenes of the hit NBC comedy in recent weeks. On set spies fear it’s only a matter of time before tempers reach their boiling point.


Star Magazine writes:

During a recent photo shoot on the set, the notoriously difficult actor sniped to the photographer, “Get ready to do a lot of airbrushing.” Tina, who has a childhood scar on her left cheek, fired back, “Something wrong with my face?” Alec upped the ante by saying it’s her entire body that’s the problem. “Tina shot back that this was coming from a guy with a double chin who thinks Sarah Palin is hot,” says a set source. “Alec was steamed about it the rest of the day and had words with Tina about it later.”