In pictures: Nicole Kidman, Leonardo DiCaprio and Eva Longoria, when Hollywood turned out to cheer for tennis at the US Open

Socialite Kylie Jenner and American-French actor Timothee Chalamet have made their relationship public with displays of affection and kisses at crowded events. Yes, including the US Open.

Nicole Kidman and Keith Urban were probably looking forward to some peaceful tennis, but along came comedienne Amy Schumer who posted a picture of Kidman watching tennis with the caption: 'This how human sit.' There was, of course, a backlash, but Kidman seemed quite unfazed at her next public appearance.

Hollywood actor Leonardo DiCaprio turned up alone, looking casual in a black tee. Cameramen were a tad disappointed about his solo appearance, considering his recent lip-lock with model Vittoria Ceretti.

Singer Justin Timberlake was all smiles at the tournament. Incidentally, his boyband NSYNC, announced their first new song in over 20 years, ‘Better Place’.

Hollywood actress Eva Longoria was all concentration as she watched the Novak-Djokovic-Daniil Medvedev finals.

Here's Emma Roberts, looking serenely beautiful at the Arthur Ashe stadium.

American Rapper Lil' Wayne added some colour to the US open with his flamboyance.