Prince William and Princess Kate's Heartwarming 12th Anniversary Exchange.
Prince William surprised Princess Kate with a family heirloom, a stunning diamond ring that belonged to his late mother, Diana, and a replica of the bouquet of flowers that she walked down the aisle holding on their wedding day. Kate, on the other hand, surprised William with a framed sketch of the two of them from an old photograph taken during their St Andrew's years. The couple celebrated their 12th wedding anniversary in a low-key manner, and they prefer to keep it simple.