In less than a week, Princess Mary will step into a new role: queen of Denmark.
The change in her status comes after Queen Margrethe II of Denmark announced she will be formally abdicating on January 14. In her place, Prince Frederik — her eldest son — will take over the Danish throne.
Mary married Frederik in 2004, meaning she's spent 20 years as a queen-in-waiting.
Kate Middleton, Princess of Wales, has lived a similar path — she will only become queen when her husband, Prince William, inherits the throne from King Charles III.
But besides being queens-in-waiting, Mary and Kate have more in common than meets the eye. Take a look.