The appearance comes just before the couple head out for their tour of Germany and Poland, which kicks off — with the kids! — on Monday.
Kate had already attended Wimbledon earlier in the tournament, where she debuted her new “kob” style — as the U.K. press has dubbed her shorter, lob haircut — at the event she recently called “a quintessential part of English summer.” (Click here for every Wimbledon outfit Kate has worn and how to get the looks for less.)
In a recent documentary for BBC One, the royal mom and tennis enthusiast said, “Every time Wimbledon is on I am there thinking, ‘Yes, I could do the same’ and get out the racket. Sadly, never the same results!”
In the documentary, Kate also recalled a starstruck moment involving her dad, Michael Middleton, and tennis champ Pete Sampras.
“ was there with Dad, very excited, and keeping a beady eye out to see who we could see,” she said. “My father is not going to enjoy this, but we were walking past Tim Henman. We had just seen Sampras play. My dad said very cooly, ‘Hi, Pete.’ I said, ‘Dad, you can’t do that!’ I was mortified.”