Hollywood's heaviest hitters invaded New York City for the men's tennis final between Novak Djokovic and Daniil Medvedev at the US Open Sunday ... but there were two locking lips.
The slew of A-listers -- Leonardo DiCaprio, Kylie Jenner, Timothée Chalamet and Nicole Kidman among them -- crammed into their box seats to watch Djokovic beat Medvedev 6-3, 7-6, 6-3 on center court at Arthur Ashe Stadium in Queens.
CATCHIN' THE CHAMP U.