Cheryl Tiegs is frequently described as 'the first supermodel', although Twiggy, Janice Dickinson and a few others would like to dispute that claim. She most definitely popularized 'Sportswear Illustrated' though and made the pink bikini a cultural icon. She definitely broke the mold, and she did it again when it came to having children.
She was already 44 when she had her first child, Zack, with then-husband Anthony Peck (son of Hollywood legend Gregory), but when she was married again to yoga guru Rod Stryker in 1998, they decided they'd also like to have children, even though by this point Tiegs was comfortably over 50. Undeterred, the couple made use of a surrogate, and that led to the birth of twin boys Jaden and Theo in the year 2000. By that point, Tiegs was 52. Even at 71 she still looks much younger than she is, and you could be forgiven for thinking she could still conceive naturally.