A very Happy Birthday to The Duchess of Cambridge who turns 31 today! Find out more about Her Royal Highness - bit.ly/13dO27B—
Clarence House (@ClarenceHouse) January 09, 2013
From Biography in The Duke and Duchess of Cambridge official site
Catherine Elizabeth Middleton was born to Michael and Carole Middleton at the Royal Berkshire Hospital, Reading, on 9th January 1982. The Duchess is the eldest of three children.
The first portrait of The Duchess of Cambridge is unveiled
Published on 11 Jan 2013 TheRoyalChannel
View a video clip on The Telegraph