The Duchess of Cambridge has turned 31. The former Catherine Middleton was born on January 9, 1982 in Reading, Berkshire to Carole and Michael Middleton. From 1984 to 1986, the Middleton family lived in Amman, Jordan. After returning to Britain, Catherine went on to attend various schools, including Marlborough College, and in 2005, graduate from the University of St. Andrews where she studied Art History. It was there that she and Prince William met and became friends. In April 2011, the couple married at Westminster Abbey. The Duchess of Cambridge is currently expecting her first child. She has kept a low-profile since the announcement of the pregnancy, largely as a result of having hyperemesis gravidarum. The baby is expected to be born in June or July. Photos by Getty Images.