Kensington Palace posted four photos on social media, taken by the Duchess of Cambridge, Kate, in Amner Hall in mid-May after their marriage. Princess Charlotte was born on May 2 and was about two weeks old at the time of the photos.
The photos show nearly two-year-old George sitting on the sofa holding his sister. George is wearing a white top with blue trim, paired with blue shorts and socks, while Princess Charlotte is in a white sweater.
One photo shows George kissing his sister on the forehead, another shows him looking down at her, one shows George looking up, and another shows George smiling. The siblings are very cute.
Kensington Palace wrote on social media: "We are pleased to share the first photo of Prince George and Princess Charlotte together at home."
Royal family photos are usually taken by some of the world's most renowned photographers, but Prince William and his wife Kate broke from tradition two years ago by releasing the first official photos of George, taken by George's grandfather, who is also Kate's father.
