Yana Grebenyuk / Us Weekly: Matthew Koma Teases Hilary Duff for Having Sex With Him in Unwashed Lollapalooza Shirt - Matthew Koma revealed that his wife, Hilary Duff, had sex with him while he was wearing the "sweaty" shirt he performed in at Lollapalooza. - Duff, 37, took to Instagram on Monday, August 4 ...