Paris Hilton wore a sexy, black, police dress with a cap while attending the Pussy Cat Doll’s party at the Viper Room in the wee hours this morning in West Hollywood, California. She brought along an entourage which included several people from her search for a new BFF, including Brittany – we still think she’s gonna win! Paris also lost one of her diamond earrings during the night, but fortunately had it returned to her after a paparazzo found it on the street.