TALK OF ‘GIRLS’: Despite a significantly shorter do, ‘Girls’ star Lena Dunham was instantly recognizable at Saturday’s Rachel Antonoff presentation. “It’s crazy, I just did it,” explained Dunham. “I was up until one in the morning last night thinking about it. Miley Cyrus and Robyn might have had something to do with this.” Busy filming the second season of her hit HBO show, Antonoff’s vintage-goes-preppy collection marks Dunham’s sole outing this week. “This is the only show I’ve been able to come to,” she said. “It’s been busy, but Rachel is such a good friend. I am a big fan of her clothes.” Of course, rumors that Dunham is currently dating Antonoff’s younger brother, fun. guitarist Jack Antonoff, probably might have something to do with her surprise appearance.