Christie Brinkley bares her toned abs in 70th birthday post

The supermodel celebrated her milestone birthday in a white Alo Yoga bra and leggings as she shared some musings on getting older Tuesday.

Christie Brinkley, 70, Shows Off Toned Abs in Mirror Selfie

Christie Brinkley, 68, shows off toned physique in bikini

Christie Brinkley gets hip replacement 26 years after helicopter crash

Christie Brinkley calls out 'wrinkle brigade' after trolls attack her appearance

Christie Brinkley shows off legs in white swimsuit ahead of 70th

Christie Brinkley and John Mellencamp are spending time together

Christie Brinkley Shows Off Abs To Celebrate Her 70th Birthday: Photo

Christie Brinkley reveals skin cancer diagnosis, details graphic treatment

Christie Brinkley, 68, shows off toned physique in bikini

Christie Brinkley shows off legs in white swimsuit ahead of 70th

Christie Brinkley, 70, Shows Off Abs In Body Positive Instagram

Christie Brinkley shows off toned abs in 70th birthday post - Good Morning America

Christie Brinkley, 67, stuns in bikini photo