Lisa Rinna appeared nude in Playboy twice.

Harry Hamlin Is 'Proud' Of Wife Lisa Rinna For Defending His Honor On 'RHOBH'

During tonight's Real Housewives of Beverly Hills, Rinna will be seen discussing her Playboy past, which includes two pictorials, one of which featured her 7-months pregnant.

On Tuesday, 2Paraghaphs reported Rinna's Playboy issue had gone back into circulation several years after it was first released. The magazine issue, which proclaims, "Melrose Mom Lisa Rinna Pregnant, Proud & Beautiful," was initially released in Sept. 1998.

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On the cover of the magazine, Rinna wore a loose-fitting, light purple shirt. Inside the magazine, Rinna was photographed topless, wearing nothing more than a pair of underwear as she showed off her baby bump from the side.

In a sneak peek at tonight's show, Rinna addressed her past pictorial, telling her co-stars that husband Harry Hamlin was supportive.

“Well it’s really interesting because, you know, Harry goes, ‘I know she’s going to do it no matter what, so I need to support her and get on board,'” she explained.

As for her two children, they appear amused.

“We had a really hilarious moment the other day, where Amelia comes in, she goes, “Mom, my friends have your Playboy — and they think you’re a M.I.L.F.’ She walked out,” Rinna recalled.

Rinna also posed for the magazine in May 2009.

For more Lisa Rinna, tune into The Real Housewives of Beverly Hills: Unseen Moments tonight at 8 p.m. on Bravo. Below is a sneak peek of the new episode, featuring Rinna and her co-stars, Lisa Vanderpump and Kyle Richards.