We have one hot mama here! Bet you Tom Cruise is regretting that he let Katie go after seeing this picture. All heads turned to this still young looking star during the Z100's Jingle Ball 2013 presented by Aeropostale at Madison Square Garden in New York City on Friday.

The 34 year old was wearing a short black skirt and an equally dangerous looking studded grayish white sweater. Talk about casual yet sexy!