Britain's Duchess of Cambridge, the wife of Prince William, has given birth to a daughter, the couple's residence Kensington Palace announced on Saturday.
The baby weighed 8 lbs 3 oz and both mother and child are doing well, it added in a Twitter statement.
Kate, the wife of Britain's Prince William, was admitted to hospital in the early stages of labor early on Saturday.
The Duchess of Cambridge was taken to the private Lindow wing of St Mary's Hospital, West London by car, accompanied by Prince William at around 6am (1am EST), the palace added.
The new baby will be fourth-in-line to the throne, behind brother George, father William and grandfather Prince Charles.
William was born at the same hospital to the late Princess Diana in 1982.
Bookmakers had tipped the child to be a girl, with Alice, Elizabeth, Charlotte and Victoria the favorite names.