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Kristin Cavallari's NYFW Appearance Made That 'Laguna Beach' Fashion Show A Distant Memory

Two words for you: RED HOT.

Nearly 11 years ago (!!!) during the first season of Laguna Beach, a then-17-year-old Kristin Cavallari didn't get the opportunity to strut her stuff during fellow high school student Trey Phillips' local fashion show -- unlike arch rival Lauren Conrad and Lo Bosworth. But at New York Fashion Week, the mother of two was front and center on the Big Apple catwalk -- and positively glowing in the spotlight.

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The former "Hills" starlet, who has been known to frequent the celeb-studded style extravaganza, donned a ravishing ruby frock at the Go Red For Women Red Dress Collection 2015 at Lincoln Center. And she even swapped her trademark black choker for some beautiful bling.

"Walking the runway last night in this gorgeous @MoniqueLhuillier gown," the budding author wrote on Instagram. "Thank you @GoRedForWomenAHA for including me in such an amazing event. #GoRed." You've got that model glow, K-Cav! And that DRESS -- simply stunning.

+ For a bit of fashion nostalgia, take a look back at Mrs. Cutler's cameo at the retro SoCal event!