8 times Kate Middleton proved she's a queen in the making Chris Jackson/Getty Image April 29 marks a decade since Kate Middleton became a member of the royal family. The Duke and Duchess of Cambridge tied the knot at Westminster Abbey on April 29, 2011. Middleton is the future queen consort to Prince William, who is second in line to the throne. Subscribe to push notifications 1. The duchess shared the most personal aspects of her life with the public, including the birth of her children The Duke and Duchess of Cambridge on the hospital steps with Prince George after his birth. Anwar Hussein/WireImage via Getty Images