Christie Brinkley is still out there strutting her stuff!

Christie once posed on the cover of Sports Illustrated Swimsuit magazines.

Now, at 68, she is still lighting up magazine covers in bathing suits!

She donned a black, belted one-piece swimsuit for the cover of Social Life.

She told the magazine that people are always asking her why she’s smiling.

“I really think at the root of everything is true gratitude,” she said.

“I start every day by counting all the reasons I have to be grateful,” she added.

“Counting my blessings is truly the secret to happiness and being full of energy and life,” she said.

“By the end of the list how can I not be happy?” she asked.