ET's Denny Directo is exclusively on set of Hilary Duff's 'Roommates' video, chatting about her big return to music and live shows. Her new album 'luck... or something' releases Feb. 20, and Hilary hits the road for her 'Small Rooms, Big Nerves' global concerts starting Jan. 19, followed by Las Vegas shows at Voltaire at The Venetian Resort starting Feb. 13....