The Duchess of Cambridge has joked that she and Prince William should have another baby.
The couple are in Poland with their two children, Prince George and Princess Charlotte, as part of a five day European tour.
At an event in the Polish capital Warsaw, Kate was offered a cuddly toy which has been designed to calm newborn babies.
After accepting the gift, the Duchess turned to her husband and said: “We'll just have to have more babies."
Kate had been told by the founder of the soft toy company that the present was for children younger than both George, who turns four on Saturday, and Charlotte who is two.
Julia Sielicka-Jastrzebska said: "We gave the Duchess some presents for Prince George and Princess Charlotte."
The founder of the company, Whisbear, added: "She said they should have more babies, and they laughed."
The royal couple were at an event for start-up businesses.
The toy given to the Duke and Duchess is designed to comfort newborns by replicating the sound of the womb.