PRINCESS Charlotte is only three years old and she's already way cooler than we are.
Here's all you need to know about the adorable young royal.
When is her birthday?
Princess Charlotte was born on May 2, 2015 at 8.34am at St Mary's Hospital
She was brought into the world in the infamous Lindo Wing, and weighed 8lbs 3oz.
Her fourth birthday is on Thursday this week.
What's Princess Charlotte's full name?
Kate and Wills' only daughter, Charlotte, has a rather long name.
Her full name, including her title is Princess Charlotte Elizabeth Diana of Cambridge.
Her middle names are those of both her late grandmother, Princess Diana, and her great-grandmother Her Majesty The Queen.
Could she lose her royal title?
As she grows older there is a possibility that Charlotte's title could change from Princess.
But rather than losing royal status, which is near enough impossible, she will gain additional titles.
If the Queen's eldest daughter, Princess Anne passes away, Charlotte could be given the title of Princess Royal, as this is a title that can only be held by one person.
She could also end up getting a Dukedom if she chooses to marry, much like her father, Prince William was given the additional title of Duke of Cambridge when he married her mother.
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