Kate Middleton Celebrates Queen's Birthday
The royals participated in the "Trooping the Color" parade.
PHOTOS: The Life and Times of Kate Middleton
Kate Middleton, Duchess of Cambridge, plays hockey with the GB hockey teams at the Riverside Arena in the Olympic Park, March 15, 2012 in London. The Duchess viewed the Olympic park and met members of the men's and women's GB Hockey teams. (Chris Jackson/WPA/Getty Images)
