EXCLUSIVE: Lisa Rinna says Harry Hamlin threatened divorce if she joined 'Real Housewives'

EXCLUSIVE: Lisa Rinna Says Harry Hamlin Threatened Divorce If She Joined 'Real Housewives'

Lisa Rinna is one of the newest cast members on The Real Housewives of Beverly Hills, but according to the actress, she almost didn't do the show at all.

"Before season five started of The Real Housewives of Beverly Hills, I had a meeting with the producers to do maybe another show," Rinna explains in ETonline's exclusive sneak peek from Saturday's Oprah's Where Are They Now? on the OWN Network. "What came out of the meeting was, maybe I should do The Real Housewives of Beverly Hills."

WATCH: Lisa Rinna Says She Received 'Terrifying' Phone Call Claiming Her Daughter Would Be Killed

Rinna was game to be a part of the reality hit, but worried about telling her husband of 18 years, actor Harry Hamlin.

"I thought 'Oh god, Harry's never gonna go for this'," she recalls. "He never will."

Hamlin was initially very opposed to the idea, Rinna says, telling her "Nope. I'll divorce you. If you do it, I'll divorce you."

"I said, 'Ok, done'," she remembers. "No more conversations, done. Walked out of the room, that was that. I was fine with it."

Lisa Rinna through the years:

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Lisa Rinna through the years
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EXCLUSIVE: Lisa Rinna says Harry Hamlin threatened divorce if she joined 'Real Housewives'
It’s femme fatale aka #RHOBH @lisarinna and thanks to @hiddencrownhair and @mspriscillanyc we warped #lisarinna to #2018 for tonight’s #WWHL #longhair #hiddencrownhair #juliusmichael #clipinextensions #facebeat #makeup by my girl @mspriscillanyc #glamteam styling products from @sevenhaircare
BEVERLY HILLS, CA - JANUARY 05: Harry Hamlin (L) and Lisa Rinna attend Esquire and the Medavoys host a party to celebrate the Golden Globes, presented by Maserati at Private Residence on January 5, 2018 in Beverly Hills, California. (Photo by Donato Sardella/Getty Images for Esquire)
LOS ANGELES, CA - JANUARY 17: Lisa Rinna is seen on January 17, 2018 in Los Angeles, California. (Photo by SMXRF/Star Max/GC Images)
THE REAL HOUSEWIVES OF BEVERLY HILLS -- 'Season 8 Premiere Party' -- Pictured: Lisa Rinna at the Doheny Room in Los Angeles, CA on December 15, 2017 -- (Photo by: Jesse Grant/Bravo/NBCU Photo Bank via Getty Images)
WEST HOLLYWOOD, CA - DECEMBER 15: Television personality Lisa Rinna arrives at Bravo's 'The Real Housewives Of Beverly Hills' Season 8 Premiere Party at Doheny Room on December 15, 2017 in West Hollywood, California. (Photo by Amanda Edwards/WireImage)
LOS ANGELES, CA - NOVEMBER 28: Lisa Rinna is seen on November 28, 2017 in Los Angeles, California. (Photo by Niceguy/Bauer-Griffin/GC Images)
CULVER CITY, CA - OCTOBER 21: Lisa Rinna attends the Dorit Kemsley Preview Event For Beverly Beach By Dorit at The Trunk Club on October 21, 2017 in Culver City, California. (Photo by Amy Graves/Getty Images)
CULVER CITY, CA - OCTOBER 21: Lisa Rinna and Lisa Vanderpump attend the Dorit Kemsley Preview Event For Beverly Beach By Dorit at The Trunk Club on October 21, 2017 in Culver City, California. (Photo by Amy Graves/Getty Images)
LOS ANGELES, CA - OCTOBER 19: Actress Lisa Rinna attends the Tommy Hilfiger VIP reception and Julien's Auctions on October 19, 2017 in Los Angeles, California. (Photo by Paul Archuleta/FilmMagic)
LOS ANGELES, CA - OCTOBER 19: (L-R) Sisters Delilah Belle Hamlin and Amelia Gray Hamlin and parents/actors Lisa Rinna and Harry Hamlin attend Julien's Auctions and Tommy Hilfiger VIP reception on October 19, 2017 in Los Angeles, California. (Photo by David Livingston/Getty Images)
LOS ANGELES, CA - OCTOBER 05: Lisa Rinna attends the 2017 Awareness Film Festival Opening Night Premiere of 'The Road to Yulin and Beyond' at Regal LA Live Stadium 14 on October 5, 2017 in Los Angeles, California. (Photo by Rodin Eckenroth/Getty Images,)
LOS ANGELES, CA - OCTOBER 07: Harry Hamlin and Lisa Rinna are seen attending TreePeople's an Evening Under The Harvest Moon Charity Gala at TreePeople in Beverly Hills on October 07, 2017 in Los Angeles, California. (Photo by gotpap/Bauer-Griffin/GC Images)
NEW YORK, NY - SEPTEMBER 11: Lisa Rinna and Harry Hamlin attend the Dennis Basso Spring/Summer 2018 Runway Show during New York Fashion Week at The Plaza Hotel on September 11, 2017 in New York City. (Photo by Sean Zanni/Patrick McMullan via Getty Images)
NEW YORK, NY - SEPTEMBER 11: Actress Lisa Rinna attends Dennis Basso fashion show during New York Fashion Week: The Shows at The Plaza Hotel on September 11, 2017 in New York City. (Photo by Cindy Ord/Getty Images For NYFW: The Shows)
NEW YORK, NY - SEPTEMBER 10: Model Delilah Hamlin, Actress Lisa Rinna and Model Amelia Hamlin attend Town & Country Magazine's Modern Swans Celebrationon at The Carlyle, September 10, 2017 in New York City. (Photo by Amber De Vos/Patrick McMullan via Getty Images)
NEW YORK, NY - SEPTEMBER 08: Lisa Rinna attends Harper's BAZAAR Celebration of 'ICONS By Carine Roitfeld' at The Plaza Hotel presented by Infor, Laura Mercier, Stella Artois, FUJIFILM and SWAROVSKI on September 8, 2017 in New York City. (Photo by Dimitrios Kambouris/Getty Images for Harper's BAZAAR)
HOLLYWOOD, CA - JULY 11: Harry Hamlin and Lisa Rinna arrive at the Grand Opening of The Highlight Room at DREAM Hollywood on July 11, 2017 in Hollywood, California. (Photo by Joe Scarnici/Getty Images for TAO Group)
MALIBU, CA - MAY 13: Harry Hamlin, Delilah Belle Hamlin, Lisa Rinna and Amelia Gray Hamlin attend Cindy Crawford and Kaia Gerber host Best Buddies Mother's Day Brunch in Malibu, CA sponsored by David Yurman on May 13, 2017 in Malibu, California. (Photo by Stefanie Keenan/Getty Images for David Yurman)
BEVERLY HILLS, CA - MAY 05: Lisa Rinna arrives at the 24th Annual Race To Erase MS Gala at The Beverly Hilton Hotel on May 5, 2017 in Beverly Hills, California. (Photo by Gregg DeGuire/WireImage)
WEST HOLLYWOOD, CA - APRIL 02: Delilah Hamlin, Amelia Hamlin and Lisa Rinna attend the Daily Front Row's 3rd Annual Fashion Los Angeles Awards - Arrivals at Sunset Tower Hotel on April 2, 2017 in West Hollywood, California. (Photo by David Crotty/Patrick McMullan via Getty Images)
LOS ANGELES, CA - APRIL 02: Delilah Hamlin, Lisa Rinna, Harry Hamlin and Cindy Crawford attend The Daily Front Row and REVOLVE FLA after party at Mr. Chow hosted by Mert Alas on April 2, 2017 in Los Angeles, California. (Photo by Stefanie Keenan/Getty Images for The Daily Front Row)
LOS ANGELES, CA - MARCH 20: Actors Lisa Rinna (L) and Harry Hamlin attend 'Dancing with the Stars' Season 24 premiere at CBS Televison City on March 20, 2017 in Los Angeles, California. (Photo by David Livingston/Getty Images)
WATCH WHAT HAPPENS LIVE -- Pictured: Lisa Rinna -- (Photo by: Charles Sykes/Bravo/NBCU Photo Bank via Getty Images)
NEW YORK, NY - FEBRUARY 14: Harry Hamlin and Lisa Rinna attend the Dennis Basso collection during New York Fashion Week: The Shows at Gallery 1 Skylight Clarkson Sq on February 14, 2017 in New York City. (Photo by Mike Pont/WireImage)
NEW YORK, NY - FEBRUARY 13: (L-R) Sherri Hill, Delilah Hamlin, and Lisa Rinna attend the Sherri Hill NYFW Fall 2017 Runway Show during New York Fashion Week at Gotham Hall on February 13, 2017 in New York City. (Photo by Astrid Stawiarz/Getty Images for Sherri Hill)
VENICE, CA - FEBRUARY 08: Actress Lisa Rinna attends the TommyLand Tommy Hilfiger Spring 2017 Fashion Show on February 8, 2017 in Venice, California. (Photo by Jeff Kravitz/FilmMagic)
THE REAL HOUSEWIVES OF BEVERLY HILLS -- 'Reunion' -- Pictured: (l-r) Erika Girardi, Lisa Rinna -- (Photo by: Nicole Weingart/Bravo/NBCU Photo Bank via Getty Images)
WATCH WHAT HAPPENS LIVE WITH ANDY COHEN -- Pictured: Lisa Rinna -- (Photo by: Charles Sykes/Bravo/NBCU Photo Bank via Getty Images)
LOS ANGELES, CA - JANUARY 08: Harry Hamlin and Lisa Rinna attend the 2017 Weinstein Company and Netflix Golden Globes after party on January 8, 2017 in Los Angeles, California. (Photo by Jason LaVeris/FilmMagic)

Lisa and hubby Harry Hamlin posed for photos at the HBO Golden Globes after party and she looked hotter than ever in a dress she dug out from the back of her closet.

This photo was taken on the red carpet at the 2005 Annual Race to Erase MS Benefit gala.
Lisa Rinna NOW (left) and THEN (right). Pretty wild, huh?
Leigh Shapiro, Suzy Hougton and Lisa Rinna during Decades Hosts a Tea for the Carole Tanenbaum Vintage Collection of Costume Jewelry at Decades in Los Angeles, California, United States. (Photo by Jean-Paul Aussenard/WireImage)
DAYS OF OUR LIVES -- 'Winter Heat' -- Pictured: (l-r) Lisa Rinna as Billie Reed, Robert Kelker-Kelly as Bo Brady -- (Photo by: Joseph Del Valle/NBC/NBCU Photo Bank via Getty Images)
Lisa Rinna wearing Gucci during Decades Hosts a Tea for the Carole Tanenbaum Vintage Collection of Costume Jewelry at Decades in Los Angeles, California, United States. (Photo by Jean-Paul Aussenard/WireImage)
Lisa Rinna during Decades Hosts a Tea for the Carole Tanenbaum Vintage Collection of Costume Jewelry at Decades in Los Angeles, California, United States. (Photo by Jean-Paul Aussenard/WireImage)
Actress Lisa Rinna presents an outfit during The Heart Truth?s Red Dress Collection show 01 February 2008 at the Mercedes-Benz Fashion Week in New York. The annual Red Dress fashion show raises awareness about heart disease in women. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)
DAYS OF OUR LIVES -- 'Winter Heat' -- Pictured: (l-r) Lisa Rinna as Billie Reed, Robert Kelker-Kelly as Bo Brady -- (Photo by: Joseph Del Valle/NBC/NBCU Photo Bank via Getty Images)
LOS ANGELES, CA - MARCH 13: Actress Lisa Rinna attends the Decades for modern vintage shoe collaboration launch with Gilt.com at Decades on March 13, 2012 in Los Angeles, California. (Photo by Tommaso Boddi/Getty Images)
DAYS OF OUR LIVES -- 'Winter Heat' -- Pictured: (l-r) Robert Kelker-Kelly as Bo Brady, Lisa Rinna as Billie Reed (Photo by Joseph Del Valle/NBC/NBCU Photo Bank via Getty Images)
DAYS OF OUR LIVES -- Pictured: Lisa Rinna as Billie Reed (Photo by NBC/NBCU Photo Bank via Getty Images)
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NEWS: Lisa Rinna Explains Her Cryptic Tweet: Changes 'Don't Always Feel Good'

Soon after, however, Hamlin had a change of heart.

"He comes back to me in like two days, and he said, 'You know, I've thought about it, I've done some research'," Rinna recalls with a laugh. "Harry, being a really, really smart businessman himself, said 'It's a good thing, it'll work for you, you should do it.' So I did it."

Oprah: Where Are They Now? airs Saturdays at 10/9c on OWN.

WATCH: What Fueled Lisa Rinna's 'Real Housewives of Beverly Hills' Blow-Up?

What Fueled Lisa Rinna's 'Real Housewives of Beverly Hills' Blow-Up?

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