The sexiest swimsuit models past and present descended on New York City Tuesday night for the Sports Illustrated Swimsuit Celebrates 50 Years of Swim party.

Cover girls Nina Agdal, Lily Aldridge and Chrissy Teigen were joined by the likes of Christie Brinkley, Carol Alt, Petra Nemcova and Irina Shayk for the big bash, along with members of this year's 'rookies' class, including Sara Sampaio, Lauren Mellor, Emily Ratajkowski and Hannah Ferguson.

Speaking of Hannahs, the gorgeous Hannah Davis was also there.

Noticeably absent from the big event, though, was Kate Upton, who covered the issue in 2012 and 2013, and is featured on a second cover for the 50th Anniversary edition, which hit newsstands on Tuesday.