Kim Richards

"The Real Housewives of Beverly Hills" star Kyle Richards stopped by The Grove to chat with "Extra" host Mario Lopez about her hit reality TV show, her sister Kim's rehab stint, and her new book!

Lopez said he thinks of Kyle as the quarterback of all the drama on "Real Housewives," now in its second season. Kyle explained, "If I'm thinking, feeling something, have to get it off my chest... doesn't always go over well."

Any regrets? "Oh, of course. You know, last season the fight with my sister Kim, I regret that," said the reality TV star. "But I don't regret it as much as I regretted this season's game night. I regretted that a lot more because that just wasn't me. I wasn't true to myself."

Eddie Cibrian's ex-wife, Brandi Glanville, makes her first appearance on the Bravo series "The Real Housewives of Beverly Hills" on Monday -- and the others do not take too kindly to her presence.

Check out this preview of cat fights to come!

Glanville, 38, shows up to a party with "Housewives" cast friend Adrienne Maloof, and immediately starts ruffling feathers, including those of Lisa Vanderpump, who has seen Glanville with one of her foes, Cedric Martinez.

Last night's season finale of "The Real Housewives of Beverly Hills" was scandalous!

The housewives attended Taylor Armstrong's birthday party, which resulted in an inebriated Kim Richards fighting with everyone! In a huge blowout with her sister, fellow "Housewife" Kyle Richards, it was revealed that Kim is an alcoholic.

The episode ended with updates on each of the characters, showing that Kim checked into rehab for a week -- only to check out a week later.

The first part of the reunion special airs next Thursday, Jan. 27th -- and rumor has there will be much on Kim's addiction.

Watch the sisters' limo fight!

Kim and Kyle Richards are sisters with Kathy Hilton and Paris Hilton's aunt.