William and Kate Duke and Duchess of Cambridge post wedding

Buckingham Palace officials announced that Kate Middleton will leave behind her commoner roots to become Her Royal Highness the Duchess of Cambridge after her marriage to Prince William on Friday. For wedding pics click here

The royal couple officially became the Duke and Duchess of Cambridge after they tied the knot today.

William also became the Earl of Strathearn and Baron Carrickfergus, which means Middleton will become the Countess of Strathearn and Baroness Carrickfergus, reports the Daily Mail.

As well as a duchess, Middleton is also technically Princess William of Wales.

All titles are in the gift of the Queen and it was up to the monarch to choose which one to bestow on her grandson and his new wife.