Seems that Kiefer Sutherland challenged his inner "Jack Bauer" Monday night.
According to reports, Kiefer attended an after-party for the Met Ball at SubMercer. It was there that onlookers, such as Mary-Kate Olsen and Kirsten Dunst, watched Kiefer HEADBUTT designer Jack McCollough. In fact, he hit him so hard, he broke his nose!!!
The actor was reportedly upset over Brooke Shields.
[Image via HRC/WENN.]