Holding court with Emma Raducanu!

In this picture, Catherine can be seen grinning as she plays tennis with US Open champion Emma Raducanu, shortly after the British teenager's sensational victory.

Catherine said of Emma's achievement: "In the presence of champions... We are all so proud of you!"

The young tennis champ noted that Catherine was "incredible" at the game.

Catherine is massive tennis enthusiast and attends the Wimbledon Championships in London every summer.