EXCLUSIVE: 'RHOBH' Star Kyle Richards Slams Brandi Glanville, Says They're Done Being Friends

The 'Real Housewives of Beverly Hills' star tells ET that a friendship with her co-star is nonexistent.

Kyle Richards is setting the record straight on her friendship with Brandi Glanville.

ET caught up with The Real Housewives of Beverly Hills star at KIIS FM's iHeartRadio Jingle Ball in Los Angeles on Friday, where she candidly chatted about the co-star she frequently butted heads with during the reality series' fifth season.

WATCH: Kyle Richards Reveals the Famous Actor She Lost Her Virginity To

When asked if she and Brandi were on good terms, Richards told ET, "We are not friends at all."

"We really didn't have a foundation to begin with," the 46-year-old reality TV personality explained. "It's not like a friend you had a falling out with and you missed them, so there's no love those there."

Well, that settles that!

In other RHOBH news, Kyle's sister, Kim Richards, was recently spotted at Beverly Hills Park filming for the show, despite speculation that she would not be returning for season six. However, a source close to Kim told ET that producers called her back to be a part of a few episodes.

When ET caught up with Kyle at the RHOB premiere party on Thursday, she said not having Kim as a full-time cast member didn't feel right.

"It was really weird starting out without her, because we started this together," Kyle said. "It didn't feel good in the beginning, but the timing wasn't right. She was taking care of herself right when we were starting… but when she did make appearances, when everything was kind of worked out, it was good to have her back for sure."

This has not been an easy year for Kim, 51, who entered rehab for the fourth time in April after she was arrested at the Beverly Hills Hotel for public intoxication. Four months later, she was arrested again for shoplifting at a Target in Van Nuys, California.

WATCH: EXCLUSIVE: Brandi Glanville Reveals New Details About Kim Richards Health Battle

A source told ET that Kim spent months battling alcohol and substance abuse issues and was "getting the help and support she needs."

Watch the video below to hear more.