Model Kathy Ireland in 1992. // Kathy Ireland, Sports Illustrated, Swimsuit Issue (Time Life Pictures/DMI/Time Life Pictures/Getty Images)

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Model Kathy Ireland in 1992.

American model Kathy Ireland made 13 appearances in the pages of Sports Illustrated's Swimsuit Issue, including three on the cover. Her first cover was the 25th anniversary edition in 1989, still the best-selling edition ever. Ireland appeared in a unique cover with Elle Macpherson and Rachel Hunter for the 1994 edition: both she and Hunter were pregnant at the time.

* Bing: What is Kathy Ireland doing now?