Christie Brinkley Reveals Secret to Her Bikini Bod, Gushes Over Sofia Vergara & Joe Manganiello

Brinkley opened up about her impressive bikini bod and spending Thanksgiving with Hollywood's hottest new married couple.

Christie Brinkley has one of the best bikini bods in Hollywood, and the legendary 61-year-old legendary supermodel recently showed off her flawless figure on Instagram with a sunny, smiling beach pic that proved age is nothing but a number.

Speaking with The Insider on Tuesday, Brinkley revealed that the real reason she keeps herself so fit is because of her kids.

WATCH: 61-Year-Old Christie Brinkley Shows Off Killer Figure in Tiny Bikini

"Being a mom is the No. 1 reason I want to eat right and be healthy and exercise," Brinkley said at the Empire State Building illumination celebration in New York City. "I want to be able to do things with my kids, and enjoy the things that they love doing."

One of those things just happened to be snorkeling and beach combing, which is what led to the sexy star's stunning bikini snapshot last week.

WATCH: Who Has the Hottest Bikini Bodies Over 50?

"I found some gorgeous driftwood and was really proud, [so] I snapped a picture and apparently it got a bit of attention," the former Sport Illustrated swimsuit model recounted, adding, "I think it's important for everybody to decide that they want to be healthy for themselves so they look good."

When she's not busy setting the Internet on fire with her stunning beach bod, Brinkley is apparently dining with the hottest new married couple in Hollywood: Sofia Vergara and Joe Manganiello.

WATCH: Christie Brinkley Sports a White Two-Piece Bikini During Italian Family Vacation

Brinkley opened up about spending Thanksgiving with the adorable couple, who tied the knot on Nov. 22 with a lavish wedding in Palm Beach, Florida.

"[They're] such a gorgeous couple! Absolutely beautiful," Brinkley gushed. "[Vergara] is just as charming as she is on Modern Family, which I watch every night with my daughter Sailor… Sofia is just so funny and so gorgeous and I was so excited to meet them."

For more on Brinkley's recent sexy beach outing, check out the video below.