After going down the traditional route in choosing a name for the royal baby, the Duke and Duchess of Cambridge have reportedly been having fun with their son's name behind closed doors.
According to The Mirror, when friends of the couple shortened Prince George's name to 'PG', his royal parents added 'Tips' to the nickname and then shortened it just to 'Tips'.
A little 'rascal' called 'Tips', eh? We hope he shares his parents' sense of humour!
Have you got any funny nicknames for your kids based on their initials?
Tell us in the comments box below.