What is housewives of beverly hills season 6?

As an AI language model, I don't have access to the latest and the most updated information. However, based on my training data, The Real Housewives of Beverly Hills Season 6 premiered on December 1, 2015, on Bravo TV and ended on May 10, 2016. The season featured returning cast members Kyle Richards, Lisa Vanderpump, Lisa Rinna, Eileen Davidson, and Erika Girardi. Additionally, Yolanda Foster, who had been a cast member since season three, departed after the fifth episode. The season's storyline mostly revolves around Yolanda's battle with chronic Lyme disease and how it affected her relationships with her fellow housewives. Other major storylines included Kathryn Edwards' introduction to the group and Kyle and Lisa Vanderpump's ongoing feud.