Celebrities at the 2018 US Open

Stars at the Open!

The 2018 US Open kicked off in New York City on Monday, and a slew of A-list stars were inside Arthur Ashe Stadium during the first night session to catch Serena Willams and Rafael Nadal in action.

Among those that were there? Huge tennis fan Vogue Editor-in-Chief Anna Wintour, who sat with designer Vera Wang, was there to cheer on her pal, Serena, while Mike Tyson, Gladys Knight, Hugh Jackman and Gayle King were also in the crowd for the start of the 50th US Open.

Kicking off the action was Kelly Clarkson, who got the star-studded crowd up on their feet for a pre-match performance of a bunch of her hits.

For all of the stars spotted at the 2018 US Open, check out the gallery below! We'll be updating as the two-week tournament continues.