© Photo: Getty ImagesPrincess Beatrice was stylish in blue flats as she arrived to the US Open for the Novak Djokovic vs. Gael Monfils semifinal match.
© Photo: Getty ImagesDerek Zoolander meets the Wolverine! Ben Stiller and Hugh Jackman attended the quarter final match between Novak Djokovic and Jo-Wilfried Tsonga on day 9 of the US Open.
© Photo: Getty ImagesPrincess Beatrice, Bruce Willis and his wife Emma Heming watched the match intently.
© Photo: Getty ImagesHeidi Klum and her boyfriend Vito Schnabel sat behind Barbara Bush for the women's semifinals during day 11 of the 2016 US Open.
© Photo: Getty ImagesLupita Nyong'o, and her friend William DeMeritt cheered on Serena Williams, who the actress called "simply the best."
© Photo: Getty ImagesHugh Grant and Anna Eberstein were spotted taking in a match on Day 7.
© Photo: Getty ImagesBeyonce & Jay Z looked enthralled as they supported their pal Serena Williams on September 1.
© Photo: Getty ImagesHugh Jackman and wife Deborra-Lee Furness returned to the US Open for the men's semifinals.
© Photo: Getty ImagesVera Wang, Anna Wintour and Cheryl Scharf had a few laughs while they watching the first round Men's Singles Match between Novak Djokovic of Serbia & Montenegro and Jerzy Janowicz of Poland.
© Photo: Getty ImagesProud as punch, Kim Murray is beaming as she cheers on her hubby Andy Murray.
© Photo: Getty ImagesPharrell Williams inquisitively looked on during a tennis match in Queens.
© Photo: Getty ImagesSay what?! Emily Ratajkowski made a face as she watched a match.
© Photo: Getty ImagesNew Yorker Princess Beatrice ventured to Queens to watch some tennis.
© Photo: Getty ImagesAlec Baldwin and pregnant wife Hilaria Baldwin showed a little PDA during the matches.
© Photo: Getty ImagesSusan Sarandon was all in as she watched the Men's Singles Match between Novak Djokovic and Jerzy Janowic from the Emirates Suite.
© Photo: Getty ImagesKevin Spacey was a true rebel while he watched Serena Williams defeat Ekaterina Makarova.
© Photo: Getty ImagesQueen Latifah and Ebony Nicholas excitedly cheered during the US Open.
© Photo: Getty ImagesGoing undercover? Wolf of Wall Street star Jonah Hill showed off some serious facial hair and rocked a more rugged look.
© Photo: Getty ImagesIt was silly selfie time for Kelly Rowland and La La Anthony, as Carmelo Anthony kept his eyes on the action.
© Photo: Getty ImagesOscar Isaac, Garrett Hedlund, Jon Hamm, Jason Biggs and Jenny Mollen caught up while watching the men's semifinals from the Emirates Suite.
© Photo: Getty ImagesUzo Aduba took in the Serena Williams vs Johanna Larsson match.
© Photo: Getty ImagesKate Upton made her way into the US Open to watch the men's semifinal match.
