Prince William and Princess Kate will celebrate their 15th wedding anniversary on April 29, and who could forget their historic royal wedding? From the Alexander McQueen wedding gown to the adorable flower girls, every part of that wedding was memorable, beautiful, royal —especially the eight-tiered wedding cake to rule all wedding cakes. The confection was created by Fiona Cairns , a quintessentially-British baker specializing in classic cakes and pastry designs, who shared her special memories of the experience with Country Life . Prince William and Princess Kate's historic wedding service. (Image credit: Getty Images) Princess Kate's Alexander McQueen wedding gown. (Image credit: Getty Images) Fiona Cairns stands next to the Royal Wedding cake. (Image credit: Getty Images) “I get goosebumps thinking about that phone call,” Fiona Cairns said. “The couple actually did reach out to us. We went to Clarence House and had a meeting with the princess and we had a cup of tea,” the baker revealed.…