The Hon. Margarita Armstrong-Jones is also one of Kate Middleton's bridesmaids. The 8-year-old is Prince William's second cousin and the daughter of Viscount and Viscountess Linley.
Photo: Prince William, right, holds hands with Margarita Armstrong-Jones at Sandringham Church on Dec. 25, 2006, in Kings's Lynn, England.
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Credit: Tim Graham/Getty Images