Christie Brinkley Looks AGELESS In White Swimsuit During Beach Outing

Christie Brinkley stunned fans with her age-defying figure Monday, taking to Instagram to share gorgeous photos of herself at the beach!

The 68-year-old famous supermodel looked sensational in a plunging one-piece swimsuit while hiding from the sunshine on an island.

The white number perfectly showed off her trim physique. It had thin shoulder straps that showcased her toned arms. However, its most distinguishing feature was its plunging neckline. The deep cut fell far down Brinkley's chest, exposing her bronzed décolletage and ample cleavage. Although, due to her poses, only a portion of her chest was seen in the angles.

The swimwear proceeded to cinch in at her waist, highlighting her flat stomach. Also of note was its daringly high-cut design, as it left her hips and sculpted thighs completely bare for her fans to admire.

Brinkley was seen sitting on a shaded area of the island. Posing under a big rock formation, she bent her knees and brought her legs closer to her upper body as she smiled brightly, while gazing at the scenery. Her backside and feet were dipped in water, while her damp blond hair was slicked back.

In the second slide, the "National Lampoon's Vacation" star showcased a similar stance in the same area as she was snapped from a different angle. A swipe to the right showed her straightening her left leg while she placed both of her hands on the other leg's knee.

The turquoise blue ocean stretched off into the distance, and the bright blue sky, including a nearby island, comprised the backdrop of the shots.

"Shady Lady!" Brinkley wrote in the caption. "My new favorite way to protect my skin from the damaging rays of the sun…just duck under the edge of a deserted island!"

She also added that she applied "Faux tanner, SPF 50" on her body, while also having "a broad brim hat, rash guards, shirts" handy as they are "a must" during beach trips.

Brinkley also noted that "this Island is my new favorite way to protect my skin!"

The post received more than 5,000 likes and nearly 200 comments in less than a day.

"Unbelievable woman seriously you are extremely gorgeous at 68. Ma'am no one equals your divinity," one person wrote.

"Beautiful photos Christie! Your posts are always positive, happy, and beautiful," quipped a second fan.

"My goodness - thought at first you were your daughter! Beautiful," a third admirer praised.

"You look like a teenager under there! GORGEOUS" asserted a different user.

Brinkley still looks stunning as ever even in her late 60s. But what is her secret?

No, it's not skincare products nor food, although they really do their magic on the skin and body.

Brinkley revealed in an interview her ultimate beauty tip is -- gratitude.

"Every day, I count my blessings," Brinkley told CNBC Make It. "Because some days can be better days than others, but by the time I finish counting my blessings, I feel like it’s a pretty good day."

She added, "Adopting a really positive attitude can work wonders to adding years to your life, a spring to your step, a sparkle to your eye, and all of that."