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RELATED: Christie Brinkley: 'Young Women Worry Too Much!'

Brinkley previously opened up to PEOPLE about staying fit and active, and how she even has a trick to motivate herself even when she's not in the mood.

"When I get lazy about exercising, I think about my goals. Short-term, I want to be in good enough shape to play with my kids, to ski and paddleboard," she said. "And long-term, I want to stay strong so I'll remain healthy and independent into my later years."

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Brinkley also said that she similarly challenges herself to stay active in other ways, like volunteering.

"Whether you're passionate about the environment or children's issues, join a group that's making a dent in a problem or issue you believe in," she said at the time. "As people age, they tend to make their lives smaller; giving back makes your life bigger."

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As for advice that she would give to herself and to other women, Brinkley noted: "You know, on Instagram, there was this challenge to [give your younger self advice] in two words, like 'laugh more,'" she told PEOPLE. "If I could say in two words, 'Relax and enjoy the ride,' that would be it."

"I think young women sometimes worry too much and should just accept themselves and their individuality," she added.