Actor and hotel heiress Paris Hilton is on cloud nine. Hilton, who was in Las Vegas on Friday to celebrate her 31st birthday, won $30,000 (Rs14.8 lakh) on a game of blackjack at Wynn casino. “Just won 30k playing blackjack at Wynn Las Vegas! YES! Birthday girl’s luck! I love gambling! (sic)” posted Hilton on Twitter.