Aside from her vegan diet and Total Gym devotion, Christie Brinkley relies on her thick blonde tresses to maintain her youthful appearance.
'I can't live without knowing I have my extensions and ponytail,' the 60-year-old supermodel revealed to Social Life Magazine.
'So I can run out the door at the drop of a hat.'
The longtime Cover Girl doesn't have to hunt her hair pieces down either, since she fronts her very own wig collection with Hair 2 Wear.
The West End star - who's worth more than $80 million - also fronts Total Gym and she's currently penning a book for Grand Central Life & Style.
Hair post - what are you rocking this summer?