Princess Eugenie added a touch of royalty to the US Open as she watched the men's final tennis match in New York City.
The 24-year-old Princess, who has been living and working in the Big Apple for the past year, was spotted sitting courtside with her entrepreneur friend Phil Winser.
Wearing a black and white patterned chiffon dress, tennis fan Eugenie watched as Marin Cilic soared to victory against Kei Nishikori in a thrilling game.
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Tennis fan Princess Eugenie giggles as she watches the men's final with friend Phil Winser
The younger daughter of Prince Andrew was pictured laughing and giggling next to Phil, the brains behind creative events agency Silkstone Group and co-founder of three restaurants in New York.
Eugenie and her friend were then invited to the exclusive Moet & Chandon Suite where they met actors Ebon Moss-Bachrach and Peter Sarsgaard.
Other celebrities who added a shot of star power to the men's final were Bruce Willis and his model wife Emma Heming. The couple, who have been married for five years, temporarily took their eyes off the court as they snapped a selfie.
Liev Schreiber attended the match with his son Samuel, while Jason Sudeikis and actress Olivia Munn were also spotted in the crowd.
Bruce Willis and his model wife Emma Heming take a selfie courtside
Eugenie has long been a fan of tennis, much like her cousins Princes William and Harry and William's wife the Duchess of Cambridge.
Earlier this year, the London-born royal flew back to her native city to watch Canadian star Eugenie Bouchard battle it out in the Wimbledon women's final. Eugenie had made a "last-minute decision" to attend the game in support of the tennis ace, who was named after the Princess by her "royal nut" mother.
The Queen's granddaughter has been going out with her long-term boyfriend Jack Brooksbank for four years.