Prior to the matches, the pair met with former female tennis champions and chatted with ball girls and boys.
Tia Carter, 11, who will be performing the coin toss before the ladies' singles final, said she was both excited and nervous to meet the royals.
Settle in for this one. And it's always nice to have some friendly royal faces in the crowd.
While Williams - who gave birth to her first child, daughter Alexis Olympia, 10 months ago - may not have won, she still praised Kerber for her hard work.
In a 2017 documentary for BBC, speaks about her admiration for some of the game's great players, saying: "I was really taken by Agassi and Sampras, Ivanisevic and Steffi Graf".
Middleton wore her hair in a signature bouncy blowout, while Markle rocked a signature messy bun.
Serena has also boasted about their friendship and recently spoke to press at Wimbledon about how they've always had each other's back. Serena and Meghan have been friends for many years, and Meghan has been seen courtside supporting her in previous matches at the Grass Court Grand Slam.
This year F1 ace Lewis Hamilton, golfer Tiger Woods and Dame Anna Wintour offered their support from behind her team.
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