Catherine's full title and style is "Her Royal Highness Princess William, Duchess of Cambridge, Countess of Strathearn, Baroness Carrickfergus." (credit: Getty Images)

Catherine keeps busy by being involved in various charities. (credit: Getty Images)

Catherine was formally introduced to public life in early 2011, two months before her wedding. (credit: Getty Images)

In 2001, Middleton met Prince William and the two began dating in 2002. (credit: Getty Images)

Because of her sense of style and fashion, Catherine has been named "best dressed" by many publications. (credit: Getty Images)

In November of 2006, Middleton worked as an accessory buyer with the clothing chain Jigsaw. (credit: Getty Images)

During the week of December 3,2012, St. James' Palace announced that the Duchess was pregnant and expecting her first child. (credit: Getty Images)

Catherine was selected as one of The 100 Most Influential People in the World by Time Magazine.(credit: Getty Images)

Catherine's engagement to Prince William was announced on the 16th of November 2010. (credit: Getty Images)

Catherine, Duchess of Cambridge is the wife of Prince William, Duke of Cambridge, and a member of the British Royal Family. (credit: Getty Images)

Catherine studied Art History in Scotland at the University of St. Andrews. She met her future husband there. (credit: Getty Images)