Christie Brinkley, 69, exudes youthful glow as she co-hosts Polo Hamptons Match and Cocktail Party… after hitting back at ‘wrinkle brigade’ who trolled her filter-free selfie

Christie Brinkley, 69, exudes a youthful glow as she co-hosts Polo Hamptons Match and Cocktail Party…

Christie Brinkley exuded a youthful glow at age 69 as she co-hosted a glamorous alfresco bash in the Hamptons this weekend.

She had teamed up with Social Life Magazine to host a polo match and cocktail party in Bridgehampton on Saturday.

The former supermodel, who rose to fame in the 1970s via the Sports Illustrated Swimsuit Issue, showed off her megawatt smile for the occasion.

She draped her still-enviable figure in an appropriate summer dress that emphasized her hourglass figure as she swam around the party.

She wore her luxurious blonde hair in waves and sported a bit of bangs, and sharpened her features with makeup, including a slick nude lipstick.

Live it up: Christie Brinkley exuded a youthful glow at age 69 as she co-hosted a glamorous alfresco bash in the Hamptons this weekend

Swan about: She had teamed up with Social Life Magazine to host a polo match and cocktail party in Bridgehampton on Saturday

Swan about: She had teamed up with Social Life Magazine to host a polo match and cocktail party in Bridgehampton on Saturday

Promotion: While cooking up a storm for the shutterbugs, she jumped at the chance to plug her wine brand Bellissima, proudly holding up a bottle

Promotion: While cooking up a storm for the shutterbugs, she jumped at the chance to plug her wine brand Bellissima, proudly holding up a bottle

Christie craved a cream-colored dress with floral accents that slid seductively off the shoulder, emphasizing her cleavage.

While she was creating a storm for the shutterbugs, she jumped at the chance to plug her wine brand Bellissima, proudly holding up a bottle.

Her latest sighting comes after Christie activated her social media to hit back at the “Wrinkle Brigade” who were trolling her filterless selfie.

When she originally posted the photo, she simply captioned it: “Downtown Girl” — a playful nod to Uptown Girl, the song her ex-husband Billy Joel wrote for her.

However, after landing on the business side of a flurry of stinging comments, she added an “Update,” marveling at the response.

“Wow Nellie! The Wrinkle Brigade is at full strength in the comment thread! It’s the people who scour celebrity pages, hoping to find some cellulite, wrinkles, or anything else to criticize,” she began her protracted comeback.

“It has to be some form of compensation for something they don’t have. But when those people show up, there are others who show up with such kind and valuable messages. Those are the remarks that restore my faith and make my heart sing!’

She concluded: “Thank you dear souls. PS I obviously don’t have any hair on my chest (I thought!) My phone has a tendency to create weird things in the shadows. But what if I did? Have a nice day, my friends!’

Comeback: Her latest sighting comes after Christie activated her social media to hit back at the 'Wrinkle Brigade' who dragged her filter-free selfie

Comeback: Her latest sighting comes after Christie activated her social media to hit back at the ‘Wrinkle Brigade’ who dragged her filter-free selfie

Christie has collected a total of four ex-husbands over the years, including Billy, who even serenaded her with Uptown Girl on stage after the divorce.

Billy and Christie share her eldest daughter Alexa Joel, 37, and have maintained a friendly relationship with each other despite the collapse of their marriage.

“Many years after our divorce, Billy still came to my house for the Christmas carols and played the piano, and all our friends came over to sing Christmas carols,” she told Social Life magazine.

Singing along is one of my favorite things to do. And you know, that’s what makes everyone happy,” the legendary pin-up added.

As for her more recent love life, she told Hello! last May: “I’m not looking for romance – there’s an expression if you don’t look it happens, so I haven’t been looking for a while and maybe it will.”