Princess Kate jokes about having 'more babies' after receiving newborn gift

Kate and William are the parents of Prince George and Princess Charlotte.

At the event with tech entrepreneurs, William and Kate also donned virtual reality goggles, leaving Kate giggling at her husband.

When fans at the event asked the Duke of Cambridge for a selfie, he replied, "I'm allergic to selfies but let's take a photograph." The future King also teased his wife, saying, "you don't look as clever as the other three."

William, Kate and their children arrived today in Warsaw dressed in red and white, the colors of Poland's national flag. After greeting dignitaries at the airport with George and Charlotte, William and Kate later received a formal welcome to Poland by President Andrzej Duda and First Lady Agata Kornhauser-Duda at the presidential palace.

This evening, Kate paid homage to her hosts by wearing a stunning cream silk dress by Polish designer Gosia Baczynska at a reception held to celebrate the Queen's birthday at Orangery, Lazienki Park, Warsaw.

William paid tribute to the resilience of the Polish nation at the event, saying, "We in the United Kingdom value our links with Poland enormously. We admire Poland as a remarkable example of courage, fortitude and resilience. You have survived centuries of assaults on your land, including partitions that were designed to wipe you off the map of Europe."

William and Kate are also scheduled to visit Poland's historical sites during their visit, including the Stutthof Concentration Camp, where more than 65,000 people perished during World War II, and the shipyards in Gdansk, the birthplace of Poland's Solidarity movement.

"In the 20th century, Poland displayed incredible bravery in resisting brutal Nazi occupation, not least the heroic uprising in Warsaw's Jewish ghetto in 1943, and the Warsaw Rising of 1944," Prince William said ahead of Tuesday's visit to Stutthof, which was one of the first concentration camps installed outside of Germany, and one of the last to be liberated by the Allies in 1945.