Before that, George joined his parents and siblings at his great-grandmother Queen Elizabeth IILondon’s Platinum Jubilee celebration took place in June.
As part of the festivities, the royal family headed to Cardiff Castle in Wales, where Kate and William let Charlotte and George check out the show’s music setup backstage.
“Cardiff, it’s been wonderful to join you this #PlatinumJubilee weekend!” the royals wrote on a June 4 Instagram Post. “We had an extra special drum demonstration for George and Charlotte, saw a stunning performance from the Wales Youth Choir for Good and had a sneak peak [sic] at how today’s show will come together!”