50 years of SI's Swimsuit: Heidi Klum leads model parade

Host Heidi Klum attends NBC and Time Inc. celebrate the 50th anniversary of the Sports Illustrated Swimsuit Issue at Dolby Theatre. (AFP)

Heidi Klum (AFP)

Model Ariel Meredith attends NBC and Time Inc. celebrate the 50th anniversary of the Sports Illustrated Swimsuit Issue at Dolby Theatre. (AFP)

Katherine Webb (AFP)

Cheryl Tiegs (AFP)

Christie Brinkley (AFP)

Rebecca Romijn (AFP)

Hillary Scott (AFP)

Steven Tyler of Aerosmith (AFP)

Tyra Banks (AFP)

Kate Upton (AFP)

Tori Praver (AFP)

Marisa Miller (AFP)