Hey now, hey now - this is what dreams are made of because Hilary Duff is officially heading to Las Vegas. Duff, 38, is set to take the stage in Las Vegas at the Voltaire at The Venetian Resort for a Valentine's weekend residency for three nights, from Feb. 13 through Feb 15."Hey girls ... How bout Vegas? Head to @hilaryduff.hq to sign up for the pre-sale, which starts this Wednesday, December 3rd from 10am-2pm PT. I can't wait to see you," Duff wrote in her announcement on Instagram.