Let’s face it Nicky Hilton’s Birthday October 5, 2013 wasn’t about Her, it was about Her sister, Paris and Paris loves Las Vegas so thats where they went. Paris and Sister Nicky, along with a couple friends visited Andrea’s and XS in the Encore. Andrea is the wife of Steve Wynn and the namesake of the highly rated Encore Restaurant. XS is the long time celebrity hangout nightclub at the Encore.