Some of the Real Housewives of Beverly Hills cast, including Camille Grammer and Kyle Richards, attended Perez Hilton’s “Blue Ball” birthday bash over the weekend. Camille and Kyle seemed to have buried the hatchet! They were joined by castmates (and friends), Adrienne Maloof and Taylor Armstrong. There’s no word on whether or not Kim Richards (Kyle’s sister) or Lisa Vanderpump attended the soiree, but all sources say all the ladies got along for the birthday party.