The royal baby has yet to arrive, but he or she is already breaking long-standing tradition.

Queen Elizabeth II has decided should the Duchess of Cambridge give birth to a baby girl, the child will be referred to as Princess or Her Royal Highness. The Queen put forth the decree on Dec. 31, 2012 but it was revealed on Jan. 9, 2013, Kate's 31st birthday, reports US Weekly.

The Queen's decree replaces an almost century-old practice established by George V stating only the eldest son of the Prince of Wales would be called a Prince, while a daughter would be referred to as a Lady (this from The Telegraph).

Some have speculated the Queen's gesture indicates the monarchy's move towards greater gender egalitarianism.

LOOK: The Best Photos Of Prince William And Kate Middleton

Loading Slideshow...
  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

  • Kate and William pictures

Also on HuffPost: