Donna Karan is keeping the catering in-house for the fundraiser she’s hosting Monday for First Lady Michelle Obama. Karan’s personal chef is cooking for expected guests at her Greenwich Village home, including Tory Burch, Harvey Weinstein, Sarah Jessica Parker and Michael Kors. Sources say the chef is “fretting about the menu, but is used to special requests from clients given that Karan follows a raw food diet.” Details are being hammered out as Karan is said to be in Haiti. Her rep couldn’t be reached.