The Princess is patron of the All England Tennis Club (AELTC), and later headed to the royabl box on Centre Court for the rest of the day’s play.
She attended a special ceremony for Roger Federer, the eight-time Wimbledon champion who retired from the sport last year.
The Princess joined Federer last month at the tennis club for a friendly doubles rally with some of this year’s Wimbledon ball boys and girls.
Last year, the Princess attended the women’s singles final, which saw Russian-born Elena Rybakina, representing Kazakhstan, compete against the Tunisian player Ons Jabeur for her maiden grand slam title.
Kate presented the trophies to both the winner and runner-up in a ceremony on Centre Court.