Lisa Rinna and Harry Hamlin are celebrating 25 years of marriage.

Rinna, 59, posted a throwback photo of herself and Hamlin, 70, sharing a kiss on their wedding day.

Rinna wore a white Vera Wang gown, while Hamlin was dressed in a suit for their 1997 wedding ceremony.

"#tbt 25 years ago," she captioned the photo.

"My Hero," Rinna added.

Lisa Rinna and Harry Hamlin walk the red carpet

Lisa Rinna shared a lovely tribute to husband Harry Hamlin on the couple's 25th wedding anniversary. (Photo by Jamie McCarthy/Getty Images)

HARRY HAMLIN REVEALS THE SECRET BEHIND HIS LASTING MARRIAGE TO ‘REAL HOUSEWIVES’ STAR LISA RINNA

Hamlin and Rinna are known to share tributes to each other via social media and have been outspoken about their marriage.

The "Mad Men" actor revealed the secret behind their lasting marriage in an interview with Us Weekly.

"Lisa and I are of the same mind," Hamlin told the outlet. "When you get married, you get married. So we have a very functional relationship, and we respect each other and listen to each other and admire each other, and we let each other be. We’re not helicopter husband and wife."

Lisa Rinna, Harry Hamlin and their families

Lisa Rinna and Harry Hamlin share two daughters. (Photo by Paul Archuleta/FilmMagic via Getty Images)

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Despite having a lasting relationship, Hamlin revealed the two do not have much in common. 

"I have no idea why opposites attract, but we are completely and utterly opposite," he further explained. "But I love to cook, and she doesn’t, so we all get fed up as a result of that. I have no interest in pop culture and she does so whatever I know about pop culture I get from her."

"As far as the science stuff goes, she’s marginally into that, but she’s very busy with all the things that she’s doing."

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Lisa Rinna on the red carpet

Lisa Rinna stars on the reality TV series "The Real Housewives." (Photo by Amy Sussman/Getty Images)

Hamlin and "The Real Housewives" star got married in March 1997. The couple shares two daughters; Delilah and Amelia. Both daughters work as successful models.