The Duke and Duchess of Cambridge watched as Wales lost to France in the final second during an unprecedented Six Nations' clash in Paris.
William, patron of the Welsh Rugby Union, and his wife watched as the game ran into its 100th minute and France scored a last-minute try.
France finally won 20-18 at the Stade de France as Wales conceded a succession of penalties.
Earlier, the royal couple threw a few passes around with some Paris school children.
William and Kate showed off their skills as they joined youngsters from local clubs being put through their paces in the shadow of the Eiffel Tower.
And when the couple chatted to parents from a British school who were watching their efforts, they revealed George has a toy rabbit called Bun Bun.
William went first during the drill session, catching a ball from a youngster and passing it on as he quickly moved forward.
He was followed by Kate who was laughing as she took a pass and then threw the ball to one of the children before catching another ball and moving it on.
Rugby coach Maxime Ramiroz praised the Cambridges' ball skills, saying: "They were very good. It was good to share a pass with the Duke of Cambridge."
He said they chatted about the rugby match, adding: "He said Wales would win and I said France - we didn't bet a beer on it, but maybe next time."
Later, the royals chatted to Zena and Graeme Hilton who had been watching the open-air drill practice at Paris' Trocadero.
The couple, who moved to France at the start of the year for work, had brought their children, Anna, aged four and one-year-old Toby to the event.
Mrs Hilton said: "Kate was interested in my daughter's toy monkey she was holding and said that George had a toy rabbit called Bun Bun."
Earlier in the day, the couple met some victims of the terror attack on the Bataclan theatre in 2015 at Les Invalides military hospital in Paris .
It is the second and final day of an official royal tour to Paris.