Party for retailers and guests at the Pure Nightclub in Caesars Palace, where A-list celebrities like Paris Hilton, Nicky Hilton, Kim Kardashian, Britney Spears and Jessica Simpson like to party the night away. United Sleep's shindig attracted an A-list of its own — bedding heavyweights on the retail, manufacturing and supplier sides, who mixed and mingled in Pure's White Room while strobe lights flashed and music blared.