Anyone called George is being given free admission to Newmarket Racecourses on Saturday to celebrate the royal baby.
Georginas will also be admitted free of charge to The July Course at the Headquarters of racing.
Amy Starkey, Regional Director – East, of Jockey Club Racecourses, said: “Newmarket Racecourses, like the rest of the country, was thrilled with the birth of baby George to the Duke and Duchess of Cambridge."
The Duke and Duchess of Cambridge have decided to call their son HRH Prince George Alexander Louis of Cambridge, Kensington Palace announced.
Around half an hour after the visit from the Queen, William, Kate and their baby were seen being driven away from Kensington Palace.
The Duchess was sitting in the back of the vehicle next to the baby seat while the Duke was a front-seat passenger.
The Queen has arrived at Kensington Palace to visit the son of the Duke and Duchess of Cambridge, ahead of her stay at Balmoral. It is the first time the Queen has seen her great-grandson since his birth on Monday.
Dressed in a turquoise floral outfit, the Queen looked relaxed as she left Kensington Palace after spending just over half an hour with the Duke and Duchess of Cambridge's first child.
She had travelled to see William and Kate and their baby without the Duke of Edinburgh who is still convalescing at Windsor Castle following exploratory abdominal surgery last month.
The Duke of Cambridge waved to the cheering crowds as he drove his wife, the Duchess of Cambridge, and their new-born son to Kensington Palace.
The Duke and Duchess of Cambridge have appeared outside the Lindo Wing at St Mary's Hospital with their new son.
Kate gave birth to the boy at 4.24pm yesterday.
The couple and the child will now travel home to Kensington Palace after Prince William makes some brief remarks to the gathered media.