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.

At 70, Christie Brinkley Poses in Sports Bra, Shows Off Toned Abs in Mirror Selfie

Christie Brinkley, 68, shows off toned physique in bikini

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

Models, Page 2

Christie Brinkley bares her toned abs in 70th birthday post

Christie Brinkley Shows Off Her Toned Body on Her 70th Birthday / Bright Side

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Christie Brinkley, 65, flaunts chiseled abs in red-hot bikini