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OTRC: Lisa Rinna stars in sexy ad for Depend's adult underwear (Video)

Lisa Rinna appears in a 2012 commercial for Depend's new Silhouette for Women products. (Depend)

Lisa Rinna shows off her svelte figure, in a sexy, skin-tight Herve Leger black dress, as well as her famous pout in a new ad promoting ... adult diapers?

The 48-year-old stars with her husband, fellow actor Harry Hamlin, in a Depend commercial promoting the company's new Silhouette for Women products. In return for her endorsement, the firm donated $225,000 to a charity she supports - Dress For Success, which provides professional clothing and career guidance to women.

In the ad, the celebrity couple walks down a red carpet and speaks to a fake reporter holding a box of Depend diapers. She discusses the charity in the ad and explains that she wore the Silhouette product "because I am a champion for positive self-image for women."

Her husband then performs the "touch test" and runs his finger down the side of her bottom and hips. Rinna turns around like a model as Hamlin growls in approval.

More than 25 million adults in the United States suffer from urinary incontinence, or loss of bladder control, according to the National Association For Continence. Up to 80 percent of them are women. More than a third of all adults aged 30 to 70 have experienced symptoms.

The Huffington Post said Rinna does not wear Depend products in real life.

"I did it for charity," she said. "They donated $225,000 to Dress for Success if I tried them on in the commercial. That's why I did it. Plus, I loved their campaign."

The website also quoted the actress as saying: "While the whole concept of adult diapers might provide giggles to the young'ens, it's no laughing matter and luckily, these panties... are definitely NOT our grandmother's diapers! Harry says soon they'll have rhinestones."

NFL players DeMarcus Ware, Clay Matthews and Wes Welker also appear in ads for the company, promoting Depend's new Real Fit for Men Briefs. In exchange, the company is donating $150,000 on their behalf to the V Foundation for Cancer Research.

Rinna is known for her role as Billie Reed on the soap opera "Days of Our Lives" and also played Taylor McBride on the original "Melrose Place" in the 1990s. Hamlin, 60, starred in the original "Clash of the Titans" film in 1981 and appeared with Rinna on the teen series "Veronica Mars" in 2005 and 2006.

In 2008, Rinna competed on ABC's "Dancing With The Stars." She and Hamlin had their own reality series, "Harry Loves Lisa," which aired on TV Land in 2010. That year, the actress underwent an upper lip reduction. She had silicone injected into it in 1986, giving her what has become a signature pouty look.

Rinna went on to star in the reality show "The Celebrity Apprentice." She is also a writer. The actress is releasing The Big, Fun, Sexy Sex Book," which she co-authored with sex therapist Ian Kerner, on May 1.

Hamlin recently appeared on the Showtime drama "Shameless," playing a bisexual married man who has an affair with one of the main characters, a young gay man. The show aired its season 2 finale on April 1.

"Wasn't he great?!!!" Rinna Tweeted a day earlier, in response to a fan's compliment about his performance on a previous episode. "Proud wife!"

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