Lisa Vanderpump is weighing in on former pal Brandi Glanville's friendship with Denise Richards.

The 58-year-old said on Monday's episode of "Watch What Happens Live" that she's "okay" with Glanville hanging out with Richards, her new co-star on "The Real Housewives of Beverly Hills."

"I'm okay with that. I mean, that's up to them. Everybody finds their own friendships. I have no problem with that whatsoever," she told host Andy Cohen.

Vanderpump had a falling out with Glanville in Season 5.

When asked who she can't see herself being friends with again between Glanville and Lisa Rinna, the star answered Glanville.

"Well, 'never' is a big word, but Brandi Glanville," she responded.

Glanville appeared to respond to Vanderpump's remarks in a pair of tweets during the episode.

She referred to incidents where she called Vanderpump an expletive and also slapped the star.

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"@Andy @BravoWWHL what is it that I did that was so much worse than the others?" Glanville wrote.

"@Andy @BravoWWHL that was a love tap I never meant to physically hurt you it was 'puppy play,'" she added of the slap.

"The Real Housewives of Beverly Hills" will return for a ninth season on Bravo in February.

The series co-stars Richards, Rinna, Kyle Richards, Erika Jayne, Dorit Kemsley and Teddi Mellencamp.