Kiefer Sutherland went IRA on Jack McCullough (half of the fashion duo Proenza Schouler) last night in NYC.
Apparently Jack bumped into Brooke Shields at SubMercer ( a bar) and knocked her over but failed to apologize. Kiefer saw this an went over to demand Jack apologize, they had words so Jack pushed Keiffer and in turn Kiefer head butted him.
Police were called Jack was taken to the hospital and held overnight.
Kiefer's still on probation from his last DUI...good luck with that Buddy.