Andy Cohen, host of Watch What Happens Live, made an embarrassing mistake during a recent episode of the show.

While interviewing Kyle Richards, Cohen casually mentioned that he knew about Richards’ breast reduction surgery.

However, Richards had never previously mentioned the procedure to the public.

Upon being asked about the surgery, Richards responded, “Oh, thank you for letting everyone know, Andy, thank you.”

Cohen was quick to apologize for the error, saying, “I thought you’ve talked about it, no, but you’ve told me about it so many times, I’m so sorry.”

Despite the awkward moment, Richards seemed to take the situation in stride and explained that she had the surgery three weeks prior.

“I had a breast reduction surgery. I never had implants. I had Double Ds, no implants, I still don’t have an implant but I went and said, ‘I want smaller boobs and don’t ever want to wear a bra ever again in my life and here I am,” she said.

Richards also made a joke about sharing more secrets with Cohen in the future and emphasized that she has always been truthful about any cosmetic procedures she has had done.

“By the way, here’s the thing about me: You could tell me you murdered somebody and I swear to you I will take it my grave, but I can’t keep a secret about myself,” she said.

“I never told anybody.”

She added, “I’m never lied about having work done and I never ever will, just so you guys know.”