The white, long-sleeved gown is from Alexander McQueen and was designed for her by creative director Sarah Burton.
The Alexander McQueen designer created the ivory gown with lace applique floral detailing and a 2.7 metre train, as well as the bridesmaid dress worn by the bride's sister Pippa Middleton, and Kate's ivory duchesse satin and lace shoes.
The skirt was handmade by the royal school of needlework at Hampton Court.
The lace design was hand-engineered using Carickmacross lace making techniques developed in Ireland in the 1820s.
The individual flowers - thistles, roses, daffodils and shamrocks - were hand-cut from Chantilly lace and engineered onto ivory silk tulle.
Kate wore a diamond Cartier tiara - loaned by Queen Elizabeth - and long veil with her hair pinned up at the front, flowing into soft curls at the back.
Her earrings, diamond-set stylised oak leaves designed by Robinson Pelham, were a gift from parents Michael and Carole.