As the world awaits the arrival of the Prince William and Kate Middleton's royal baby, we take a look at the youngest European royal babies born in the last few years.

From Prince Vincent and Princess Josephine, Denmark's cute twins, to Sweden's only royal baby, the adorable Princess Estelle, here are some of the regal babies and toddlers that the Duke and Duchess of Cambridge's baby may be having palace play dates with.

See HELLO! Online's cute European royal baby gallery...