Britain's Prince Harry "can't wait" to meet the new princess.
The 30-year-old royal is currently on an army secondment in Australia but is looking forward to meeting the new princess, who was born to the Duke and Duchess of Cambridge on Saturday (02.05.15) morning, when he returns.
Speaking about his niece, he said: "She is absolutely beautiful. I can't wait to meet her."
Meanwhile, the couple - who also have 21-month-old Prince George - have said they are "hugely grateful" for the outpouring of love for their family following the arrival of the as-yet unnamed tot at 8.34am yesterday.
A statement on Kensington Palace's official Twitter account read: "The Duke and Duchess are hugely grateful for the messages of congratulations they have received from people all over the world. It means a great deal to them that so many people have celebrated the arrival of their new daughter."
The statement also confirmed that Prince Charles, the Duchess of Cornwall and Carole, Michael and Pippa Middleton had all visited the family today (03.05.15).
Exiting the Lindo Wing at St Mary's Hospital in West London yesterday, Prince William, 32, told the press he was "very happy" about becoming a father to the baby princess, who is fourth in line to the throne.
Alongside Prince Harry, Queen Elizabeth II has yet to meet the new princess as she is currently on a royal engagement.