The arrival of a girl has restored the gender balance amid a "dearth of young princesses" in the direct line of succession, a British historian says.
A girl has not been born this high up the line of succession for 65 years since Princess Anne arrived third in line in 1950.
Dr Judith Rowbotham, visiting research fellow at Plymouth University, said it was the women in the royal family like the Queen who have paved the way for the monarchy in recent history.