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

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

Catherine's engagement to Prince William was announced on the 16th of November 2010. (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 keeps busy by being involved in various charities. (credit: Getty Images)

With Catherine's pregnancy being announced, it was also reported that she was being treated for severe morning sickness or suffering from hyperemesis gravidarum. (credit: Getty Images)

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

Because of her strong fashion sense, Catherine has been seen as a fashion icon and creator of what is called the "Kate Middleton effect" when it comes to fashion. (credit: Getty Images)

In 2008, Middleton attended the wedding of Prince William's cousin Peter Phillips to Autumn Kelly; Prince William did not attend the ceremony. (credit: Getty Images)

Catherine became engaged to Prince William while the two were in Kenya. (credit: Getty Images)