Wardrobe malfunction?

Per the White House pool reporter, Jessica Simpson may have fallen victim to a wardrobe malfunction last night in the Bushes' presence at the Kennedy Center Honors.  Simpson sang "9 to 5" in a tribute to honoree Dolly Parton, but ran off the stage near her last note.  Nothing was shown, but the pool reporter notes that she was holding her dress a lot during the performance.  The audience didn't applaud and seemed confused when Simpson ran off the stage.  She came back out in tears with a full group of country singers to bow for Parton.