Two-year-old Prince George stayed up past his bedtime to welcome US President Barack Obama and first lady, Michelle Obama, at the Kensington Palace in London on Friday, April 22.
Already dressed in his white pajamas, George even played on the rocking horse given to him by the US leaders when he was born.
The Obamas visited the royal family during their 3-day visit in the UK, during which the US president is also set for talks with Prime Minister David Cameron.
Barack and Michelle had lunch with Queen Elizabeth II and Prince Philip at Windsor Castle. They also had dinner with Prince William, his wife Kate, and Prince Harry at Kensington Palace.