At Wimbledon, the biggest stars aren't just found on the tennis court. Spotting A-list attendees in Centre Court's Royal Box and elsewhere is something of a spectator sport all its own.

Check out some of the famous faces who took in the quarterfinals at the All England Club this year, in the Royal Box and beyond—which included a visit by Queen Camilla.

Read more: Wimbledon watchers: 11 celebrity tennis looks that kept us talking

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The queen met with met with ball kids as well as former pros Jamie Delgado and Laura Robson.

The queen met with met with ball kids as well as former pros Jamie Delgado and Laura Robson.

Attending with her sister, Annabel Eliot, the queen also took part in doing the wave during the five-set thriller between Taylor Fritz and Lorenzo Musetti.

Attending with her sister, Annabel Eliot, the queen also took part in doing the wave during the five-set thriller between Taylor Fritz and Lorenzo Musetti.

Also in attendance on Day 10 were Carole and Michael Middleton, parents of Catherine, the Duchess of Cambridge.

Also in attendance on Day 10 were Carole and Michael Middleton, parents of Catherine, the Duchess of Cambridge.

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Two-time Academy Award nominee Keira Knightley looked cool in WImbledon white in the Royal Box.

Two-time Academy Award nominee Keira Knightley looked cool in WImbledon white in the Royal Box.

On Day 9, writer and director Lena Dunham accessorized a dark blazer with a colorful manicure and necklaces.

On Day 9, writer and director Lena Dunham accessorized a dark blazer with a colorful manicure and necklaces. 

Hannah Dodd, the breakout star of this season of Bridgerton in her role as Francesca, looked cool in yellow as she sipped on a cup of Pimm's.

Hannah Dodd, the breakout star of this season of Bridgerton in her role as Francesca, looked cool in yellow as she sipped on a cup of Pimm's.

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He's back! After first coming in the tournament's early days, singer Cliff Richard was back on Day 9.

He's back! After first coming in the tournament's early days, singer Cliff Richard was back on Day 9.

Who's hungry? Celebrity chef Jamie Oliver and his wife Jools were among Day 10 attendees.

Who's hungry? Celebrity chef Jamie Oliver and his wife Jools were among Day 10 attendees.

Though he didn't hit a ball on Day 10 thanks to Alex de Minaur's injury, Novak Djokovic did meet F1 driver George Russell.

Though he didn't hit a ball on Day 10 thanks to Alex de Minaur's injury, Novak Djokovic did meet F1 driver George Russell.