Christie Brinkley marked a milestone birthday on Feb. 2, and she shared the belated 70th celebration by sharing some words of wisdom to her followers about this season of life. The supermodel accompanied the poetic caption with a snapshot that showed her looking strong, fit, and fabulous!

Wearing black leggings that hugged her gorgeous curves along with a white jogging bra, Brinkley flaunted her toned abs and muscular biceps. Her blonde hair flowed down her shoulder in a soft wave and there was a big smile on her face — she looked and felt great. She shared a rhyming poem in honor of her big day with a sprinkle of advice for anyone who has fears about growing older.