Kate Upton joined a bevy of other bikini babes at a party celebrating the 50th anniversary of the Sports Illustrated Swimsuit Issue.

Upton was joined by the likes of fellow models Chrissy Teigen, Jessica Gomes, along with several cover girls of the past, including Christie Brinkley, Kathy Ireland, Cheryl Tiegs, Tyra Banks, Heidi Klum and the magazine's first ever cover model, Babette March.

Model Katherine Webb, who was made a national star by sportscaster Brent Musberger during last year's BCS National Championship, was also at the event, so we assume she'll be in the issue for the second straight year.

Former Hollywood couple Alec Baldwin and Kim Basinger's daughter Ireland was also at the event. So far there's been no word on whether or not she'll be appearing in this year's issue, out in February.