Transformation

After launching her career with long, bombshell locks, Olivia Munn fearlessly went for the big chop. "I cut it for I Don't Know How She Does It. It was my idea," she told us. "They were so excited because actresses usually fight about cutting their hair, which I get but I felt like it was something the character would have." Bonus? "It's very easy and effortless. It takes a minimal amount of time to get ready now." And despite the fact that "I haven't had it this short since I was 12," the new look is as sexy as the actress!

The Attack of the Show! co-host wore her hair in a sophisticated chignon for an Entourage bash.