Kiefer Sutherland at the Met Costume Institue Gala in New York (5/4)

Kiefer Sutherland headbutted Jack McCollough Monday night after the designer allegedly knocked Brooke Shields over. The incident occurred during the after-party for the Costume Institute Gala in New York. McCollough was hit so hard, his nose broke. From TMZ:

According to one law enforcement source, "Brooke was definitely involved." As we reported, Kiefer and witnesses say McCullough pushed Brooke and Kiefer stepped in and demanded he apologize to her. Kiefer's peeps say Jack pushed Kiefer, and the actor responded with a headbutt.

There are reports Kiefer was drunk at the time of the incident.

Law enforcement sources also tell us they have been in touch with FOX studios, asking for them to arrange a time when cops can interview Kiefer.

Perhaps the weirdest thing about this story (other than it centers around Brooke Shields - what is this, 1996?) is Brooke is denying that Jack ever pushed her down. In other words, Kiefer just walked up to this designer and headbutted him. OK, yeah, I can believe that. He deserved that headbutt. His fall line fucking sucked.

NOTE: You think when Kiefer gets drunk, he just does his 24 character all night long. "Hey bartender, I'd like a Jack & Coke . . . AND MAKE IT A DOUBLE!!! HURRY!!!"

[WENN]