The Real Housewives of Beverly Hills' Kyle Richards was one of many Hollywood faces to attend her niece's party in L.A.Paris Hilton threw a first-of-its-kind party at her L.A.-based mansion Slivington Manor and it's no surprise that her aunt Kyle Richards and cousins Alexia Umansky, Sophia Umansky, Portia Umansky, and Farrah Aldjufrie were there to celebrate. How to Watch Watch The Real Housewives of Beverly Hills on Peacock and Bravo. Kyle shared an inside look at the bash in a Sept. 21 Instagram post, writing that it was “fun with family and friends." Needless to say, Kyle was “obsessed.”Related: Kyle Richards & Kathy Hilton Share Insight into Kim Richards’ Life on Her BirthdayWhat has Portia Umansky been up to? Don’t miss the latest on Kyle and the fam, including why Mauricio left Kyle in tears at Alexia’s wedding.