And his name is...
George Alexander Louis!
According to the statement, the baby will be known as His Royal Highness Prince George of Cambridge.
Though Prince Charles and Princess Diana took a week to announce William's name, Will and Kate took just two days. Prince George was born Monday at St. Mary's hospital in London at 4:24 p.m. local time, 11:24 a.m. ET.
The name was announced in an email from Kensington Palace. Most of the royal family does not use a last name, though in 1917, King George V adopted the name surname Windsor for his family.
The prince isn't obliged to take any of these names as his title when he eventually becomes king.
George is the name of Queen Elizabeth's dad, subject of the 2010 film "The King's Speech." King George VI was known to his family as Bertie.
Before George's name was revealed Wednesday, James and George had been jostling for position as the bookmakers’ favorite, British betting firms Ladbrokes and Coral said. (Coral said the royal baby had been the biggest non-sporting event in the company’s history.)
Read more at nbcnews.com