Real Housewives of Beverly Hills star Lisa Vanderpump has slammed rumours about her quitting the show and said that the cast for season 6 is yet to be finalised.

Vanderpump, took to Twitter to confirm that neither she nor Kyle Richards are planing to leave the reality show.

Previously a Radar Online report claimed that Lisa Vanderpump, Kim and Kyle Richards would not return for season 6.

A source told website, "Lisa has so many other things going on right now that she really does not have the time for the added drama that The Real Housewives of Beverly Hills brings into her life."

"She will be announcing her plans soon," the insider claimed.

In addition to this, Radar also featured exclusive quotes from the Vanderpump Rules star.

It quoted her as saying: "I have a lot of things going on right now, but I have always been a business woman."

"I am also right in the middle of filming Vanderpump Rules which takes up quite a lot of my time at Sur," Vanderpump added. "It is all positive and it also gives me a platform to support the causes that I am passionate about. GLAAD being one of them."

Previously, E!Online reported that the Kim Richards, who was back in rehab for alcohol addiction, after she relapsed at her daughter's wedding in Mexico, will not return for RHOBH season 6 as a full-time cast member.

According to the website, "It is possible Kim may return for a cameo, or a few appearances, but not as a full-time series regular." However, Bravo is yet to comment on Richards' status as of yet.