Charlotte, the second child and only daughter of Prince William and Kate Middleton, was born at 8:34 a.m. on May 2, 2015 at St Mary’s Hospital in Paddington, London, according to The Royal Family. She’s currently third in line to the British throne behind her father and brother, Prince George, who turns 12 in July.

Royal editor Roya Nikkah of the Sunday Times shared the story in the BBC documentary Royal Wedding: A Day to Remember. "When the guest list was drawn up [Prince William] was very bemused and had a conversation with The Queen to say, 'I don't know any of these people,'" she said (via the Express ).

Princess Kate and Prince William have marked each of their children’s birthdays over the years with new portraits. The sweet tradition began when their eldest son, Prince George, celebrated his first year in July 2014.