Following an incredibly cringe-worthy Gerard Butler interview that took place on "WWHL" just last week -- where the "300" actor said he had "no idea" who Brandi was when he slept with her -- Rinna said she almost "didn't recognize" Brandi when she saw the "RHOBH" alum at a Christmas party.
"She came up to me, and I didn't recognize her at first 'cause it was this woman in this Santa suit, so I was like, 'Who is this?'" Rinna told Andy Tuesday night.
"And my eyes -- they're not that great anymore -- so she literally got this close to me, and I went, 'Oh my God, that's Brandi Glanville!'" the current "RHOBH" cast member said. "And she sat down and she started talking to me, and I just talked to her. And then she went and talked to Harry. And we had a civil conversation. Go figure! It was really nice. It was really lovely, actually."
Andy then asked Rinna if there was ever any bad blood between the two.
"Oh, no, she didn't like me," Rinna said. "Oh, she did not like me. Are you kidding?! Hellooooo. Come, back, Andy. Yeah, not good."
Here's everything Rinna had to say about her "RHOBH" co-stars -- past and present.
When a caller asked Rinna why she lets Lisa Vanderpump take so many jabs at her, Rinna said it's reciprocal.
"Oh, sweetie, that's what we do," Rinna replied. "We jab each other back and forth!"
When Andy pointed out that the two Lisas "seem to have a very playful thing going this season," Rinna agreed.
"I enjoy nothing more than taking the piss out of Lisa Vanderpump, and I think vise versa," she said. "So it might look like she's taking a lot of jabs -- and she is -- but you know what? I get her back, trust me."
Andy then showed Rinna a photo of Vanderpump from Season 1.
"Who's that? Is that Lisa Vanderpump?" Rinna said laughing. "Oh, oh! I recognize Giggy."
A fan asked Rinna who in Beverly Hills she thought did the worst job of "owning it," and Rinna had her answer ready to go.
When a caller asked Rinna if she believed Erika Girardi and Dorit's newfound friendship was genuine, Rinna gave a somewhat surprising answer.
"Actually, I think it is for real, and I really like seeing it," she said. "As you watch the season, you're gonna see a lot of dynamics change, and people are gonna come and go in their relationships, and I think that the Dorit-Erika [friendship] is really quite nice."
Andy pulled up a photo of Kyle Richards from Season 1 and asked Rinna how Kyle has changed.
"Kyle's richer," Rinna said. "She's a lot richer."
Andy did the same thing and pulled up a photo of Kyle's sister, former "RHOBH" star Kim Richards.