Fifty-five-year-old Donna Karan's boy toy is 30-year-old model J.J. Biasucci. Ethan Hawke allegedly started dating "secret" girlfriend (his former nanny!) Ryan Shawhughes before he was divorced from Uma Thurman. Steve Martin played the banjo and read funny poems at the Cutting Room. Gwyneth Paltrow and Chris Martin shared a happy dinner at BLT Fish. Eighty-eight-year-old Manhattan district attorney Robert Morgenthau may step down from his post, which would allow Governor Spitzer to appoint Cyrus Vance Jr. Michael Kors served mini-cheeseburgers at his store opening in Soho. Madonna kicked 25 yoga students out of a studio at the Reebok Sports Club on Columbus so she could practice by herself. Howard Stern is annoyed at Ben Affleck and Jennifer Garner for bringing paparazzi to his Upper West Side block.