Model and author Maye Musk — the chic, white-haired woman in CoverGirl ads — knows a thing or two about aging well. Now 71, Musk became the oldest spokesmodel in the company’s history two years ago.

Her billionaire son may have dominated headlines recently, but 74-year-old Maye Musk is now in the spotlight after becoming the oldest model to feature on the Sports Illustrated (SI) Swimsuit cover.