Prince George and Princess Charlotte - the photos were taken by the Duchess of Cambridge in mid-May, making Princess Charlotte just a couple of weeks old.
Kensington Palace released the photos on its Twitter account, writing: "Prince George and Princess Charlotte together at home #WelcomeToTheFamily"
The Palace has also confirmed when Princess Charlotte will be christened: "The Duke and Duchess of Cambridge are pleased to announce the christening of Princess Charlotte will take place on Sunday 5th July. Princess Charlotte will be christened by The Archbishop of Canterbury @JustinWelby at St Mary Magdalene Church in #Sandringham"
Prince George and Princess Charlotte - doesn't he look like the perfect doting big brother!
A gallery of the first photos of the new Royal baby, a daughter for the Duke and Duchess of Cambridge, born at 8:34am on May 2. William and Catherine left the Lindo Wing of St Mary’s Hospital at 6:30pm, just 10 hours after the baby girl was born. William brought big brother Prince George to the hospital to see his new sister. Congratulations to the new family of four!
Princess Charlotte arrived on May 2, 2015 - congratulations William and Kate! Whether you are buying a gift for a loved one who has also just had a baby, or would like to honour the Royal arrival with a special keepsake, we have chosen our favourites from all the Royal baby gifts available. See all the photos from Princess Charlotte’s arrival.