Anne Slater, a socialite who could always be spotted in her signature cobalt blue glasses, has died, according to remembrances on social media.

A fixture of New York's society circuit for decades, Slater entertained the likes of Grace Kelly and Gloria Vanderbilt with a sense of humor and a sharp wit—she is, after all, known for coining the phrase, “A woman needs four animals in her life: a mink in the closet, a Jaguar in the garage, a tiger in bed and an ass to pay for it all." Eventually, she landed herself a spot on Vanity Fair’s International Best Dressed List Hall of Fame.

News of her passing came by way of social media, as many whose lives were touched by Slater shared their condolences and remembrances after she reportedly passed away “peacefully in her sleep Christmas Eve." She is survived by her close companion John Cahill, who broke the news. From club kids to design editors, many paid tribute to Slater on Instagram and Twitter, sharing photos an anecdotes of the chic socialite and her warm spirit. Of course, in just about every single one of the remembrance photos shared on social media, Slater is wearing her iconic blue lucite frames that she almost never took off.

Former club kid James St. James shared a photo of the “incomparably chic” Anne from a 1986 copy of WWD. “Very sad to hear about the passing of socialite/philanthropist Anne Slater, who died in her sleep, Christmas Eve,” he wrote in his caption on Twitter.

Wendy Goodman, design editor of New York magazine, also shared her remembrance on Instagram.

Goodman also shared some photos of Slater in her 14-room apartment at 998 Fifth Avenue, which was up for sale in 2006 after Anne's 53-year residency in the home. "Anne’s apt in a 1910 Stanford White -designed building included a gallery and an enfilade of public rooms to rival any mansion," captioned Goodman on her Design Hunting Instagram.

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Just heard from @dhwendygoodman that the beloved social figure Anne Slater died peacefully in her sleep on Christmas Eve. Survived by John Cahill her beloved John. Oh the chic and lightness of being #anneslater known formally in more formal times as Mrs. Denniston Slater. She was my best reader, understood my scribbling better than anyone. And she was kind and sympathetic and always up for a lark. For instance, in 2001 I was producing a photo shoot @nytimes on the glories of blue and white--blue and white everything from clothing to linen to wallpaper to porcelain of course. Styled by the great Barbara Turk, the shoot also included a blue and white meal, all blue and white food prepared by super-chef Hank Thomashevski, for Mrs. Slater, because of her always blue eyeglasses you see, and the cast of the #bluemangroup on a set swimming in Harry Hinson blue and white spatter wallpaper. About those blue eyeglasses, here is the story Anne told me for The Times about why and how she always only eyeglasses: "Anne Slater, the New York social figure, was very clear from an early age that the heavenly colors blue and white would suit her all her days. She bought her first pair of blue prescription glasses at Lugene's in Philadelphia when she was just a young college student with serious platinum blond hair. And then, one fine day at the late, lamented Colony restaurant in New York, her future husband, Denny Slater, and the maître d', Sirio Maccione, came bearing a frothy, specially concocted drink the color of her glasses. Her nickname being Mouse, they called it a Blue Mouse and insisted that she drink to the bottom. There she found her marquise-cut engagement diamond from Harry Winston, ''10 carats bigger than my fingernails.'' She recalls that she wore them very long back then. Anne Slater returned to Lugene's and bought 35 more pairs of the spectacles that cast such an intoxicating spell. The splurge was absolutely necessary. The lenses are made of cobalt, and the saturated blue frames are made of Lucite, which is flammable, and her eyeglasses would soon be banned. Luckily, her prescription hasn't changed. ''It wouldn't dare, darling,'' she said.

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When Goodman interviewed Slater in 2006 for New York, the society doyenne referred to the city as "a moving cocktail party," one where her own soirees were legendary for being "a little fuller" than the norm. With her passing, the city has lost not just a direct connection to its storied past, but a grand dame who was the epitome of uptown class.

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