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Tinsley Mortimer's Sister Dabney Has Had a Much Quieter Life Than the 'RHONY' Star

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Long before she became a cast member on The Real Housewives of New York City, Tinsley Mortimer’s name was everywhere. Without fail, the Manhattan socialite would be seen in the front row at every major fashion show and was a favorite topic of conversation among gossip sites like Page Six.

Despite her popularity, the blonde beauty’s personal life has always remained a bit of a mystery. Her ex-husband, Topper Mortimer — whom she was married to during the height of her fame — was notoriously private compared to his wife and not much is known about the style icon’s only sibling, Dabney Mercer.

In order to rectify that, we did some digging on Dabney, who previously appeared on her older sister’s short-lived reality show, High Society. Scroll down for some facts about the former tennis champion.

Dabney has never been married.