Victoria Jones/PA WireKate Middleton attended day two of Wimbledon 2019 on Tuesday.
The Duchess of Cambridge arrived at London's All England Lawn Tennis and Croquet Club in a custom white shirt dress by luxury womenswear brand Suzannah. The royal cinched her ensemble with a black Alexander McQueen belt and pinned a bow brooch onto her lapel. She also accessorized her look with a pair of gold fern Catherine Zoraida earrings, an Alexander McQueen "Wicca" mini clutch in raffia, a pair of Ray-Ban sunglasses and some Gianvito Rossi black suede shoes.
The mother of three sat next to players Anne Keothavong and Katie Boulter in an outside court, where they watched Harriet Dart face off against Christian McHale. She then moved to the royal box in Centre Court, where she was joined by Wimbledon chairman Philip Brook.
While Kate's appearance came as a surprise to some attendees, royal admirers know she has an affinity for sports. In fact, she's attended The Championships before, including last year with her husband Prince William.
This wasn't the first time a famous face had been spotted amongst the crowd at this year's tennis tournament.
Rebel Wilson, Janelle Monae and Alex Rodriguez were all photographed enjoying a match yesterday. To see more celebrity sightings, check out the gallery below.
The actress appears at the Men's Singles Final wearing Dolce & Gabbana.
The son of David Beckham and Victoria Beckham attends the Men's Singles Final with his girlfriend.
The Amazon CEO and his girlfriend attend the Men's Singles Final.
The reality star and her friend attend the Men's Singles Final.
The two actors appear with Benedict's wife to watch the Men's Singles Final between Roger Federer and Novak Djokovic.
The Duke and Duchess of Cambridge attend the Men's Singles Final.
The two watch the Men's Singles Final between Roger Federer and Novak Djokovic.
The Duchess of Cambridge (in Dolce & Gabbana) and her sister appear with the Duchess of Sussex as they watch her BFF Serena Williams compete against Simona Halep in the Ladies' Singles Final.
Summer style is in full swing and the actress' casual look is proof.
The Crown star gets animated while watching a particularly intense match.
How the tables have turned! The soccer player sits in the crowd as the athletes rally.
The True Detective star dons a fedora and shorts for the high-profile games.
Kate Middleton's sister and brother-in-law return to the courts for another day of intense matches.
The Dirty John actor and his wife enjoy a low-key day at Wimbledon.
On the heels of their honeymoon, the newlyweds enjoy a fun and exciting game.
Despite having her hands full, the British pop star looks effortlessly elegant in the stands.
The Brit rocks a sleeveless Polo Ralph Lauren dress.
The "1999" singer can't get enough of all the excitement on the court.
Whether it's a full suit of armor or a head to toe pink getup, the Game of Thrones actress proves she looks radiant in just about anything.
The Men in Black: International star stuns at the All England Lawn Tennis and Croquet Club.
Kate Middleton's stylish siblings stroll through the All England Club. Pippa chose a pink, Stella McCartney dress for the day.
The Simple Life alum went for a bright floral sun dress while her husband rocks dark camo.
The actress looks cool and confident in her monochromatic look for day seven of Wimbledon.
Rogue One's superstar and her husband sport matching sunglasses.
The Duchess of Sussex enjoys a girls' day out as she cheers on close friend and tennis champ Serena Williams.
The Fleabag star is on the edge of her seat during a match.
The Spice Girls songstress can't hide her excitement from the stands.
Wimbledon ready! Monáe looks ready for the court in a preppy, chic ensemble. She also posed for a picture with her music collaborator Nathaniel Irvin.
Kate Middleton's mom looks prim and proper as she arrived.
The Hunger Games star is dressed to the nines for day three of the sporting event.
Considering the tournament is just getting started, fans can expect even more celebrity sightings.