What Are Sizzling Facts About the Sports Illustrated Swimsuit Issue?

Swimsuit Issue Evolution 1 of 11

The first-ever Sports Illustrated swimsuit issue made its debut in the Jan. 20, 1964 edition of the magazine as a five-page supplemental layout.

The Swimsuit Issue finally received special edition status in 1997, and it has gone on to become the best-selling issue in all of Time Inc.'s magazine franchise.