Bradley Cooper, Renée Zellweger's Fire 911

1/17/2011 12:40 PM PST

Bradley Cooper, Renee Zellweger's Fire 911

It was like "Backdraft" ... starring Bradley Cooper and  Renée Zellweger .... when a fireplace fire got out of control Sunday night at Bradley's mom's house.

It happened in Jenkintown, Pennsylvania.  Bradley, Renée and Bradley's mom were there, when the fire jumped the fireplace into the room.  Four fire trucks roared to the scene and the blaze was extinguished.

No one was hurt.