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Britain's Kate, Duchess of Cambridge and Prince William ride in the front of a boat as they watch the America's Cup World Series Race, on the Solent, in Portsmouth

Britain's Kate, Duchess of Cambridge and Prince William ride in the front of a boat as they watch the America's Cup World Series Race, on the Solent, in Portsmouth, Britain July 24, 2016. REUTERS/Tim Ireland/Pool

Will and Kate don white hats

July 8, 2011

Royals join in Calgary Stampede tradition.