“RHOBH”'s Kathy Hilton Keeps a 'Couple' of Her Nude Photos Locked in a Vault at Her Bank: They're 'So Sexy'

Kathy Hilton is all for a tasteful nude photo!

On the Tuesday, Dec. 10 episode of Real Housewives of Beverly Hills, the reality star, 65, opened up about taking spicy photos for her husband, Rick Hilton.

When her sister Kyle Richards asked if she sent nude pictures to Rick while she was away, Kathy admitted that she doesn't send explicit messages, but she has been involved in a sexy photo shoot.

"We have a couple in the safe in the bank," Kathy revealed. "Caesar's palace in Las Vegas, they have those beds with the big mirror. Seriously, it's so sexy."

Related: Kathy Hilton Says Her Favorite Holiday Tradition with Her 8 Grandkids Involves Caviar on Scrambled Eggs (Exclusive)

In a conversation with cameras, Kyle, 55, reacted to how Kathy stored her intimate images.

"Who puts their nude photos in a vault at the bank? I'm just picturing Kathy naked with like, fuzzy socks and a hat on," she quipped.

Kathy and the Hilton & Hyland co-founder tied the knot on Nov. 24, 1979. They went on to welcome four children together: Paris, 43, Nicky, 41, Barron, 35, and Conrad, 30.

Related: Kathy Hilton and Husband Rick Go to the Cheesecake Factory Once a Week for Date Night

Reflecting on her decades-long marriage to her real-estate mogul husband, the reality star previously told PEOPLE that the secret to their relationship is that they are "best friends."

"And, I was just saying to someone, getting married so young like that — I was 19 and he was 23 — [the key is] just keeping the right people around you, the right influences and being around other couples who are happy [and] have the same values as you," Kathy explained.

The couple also celebrated their 45th year anniversary with a trip to London and Paris in late November. The day after Kathy hosted her annual holiday pajama party at her Los Angeles home, the pair flew overseas.

"We did five days in Paris and seven days in London," she said, recalling how the snow made the scenery all the more magical. "It was shocking, it was gorgeous. My husband put it on his Instagram."

Related: Kathy and Richard Hilton's Sweetest Moments with Their Grandkids

In November, Kathy shared another detail that has helped keep the couple's marriage strong, telling PEOPLE, "We have not been away from each other for two weeks in [all our years] of marriage."

“I don't think you go to bed without saying, ‘I love you,’ and giving each other a kiss and never in a fight or anything,” she added. “If you have had a disagreement, you always make up before you go to sleep and keep a little mystery and always keep it exciting and fun.”

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The Real Housewives of Beverly Hills airs Tuesdays at 8 p.m. ET on Bravo.

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