The Duke and Duchess of Cambridge were denied victory at the King's Cup yachting regatta by adventurer Bear Grylls.
The Duke and Duchess of Cambridge went head-to-head in the event off the Isle of Wight, but Kate was handed a giant wooden spoon for coming last in the sailing spectacle.
George and Charlotte joined their grandparents Carole and Michael Middleton on a boat to watch the race, and were close by during the presentation ceremony.
After lifting the trophy, Grylls appeared to suggest that George had eaten an ant when he said: "And also Prince George, your first ant you ate today.
And that is a great moment.
Well done you."