When Kate Middleton married Prince William in 2011, she wore a wedding gown designed by Sarah Burton of Alexander McQueen. The intricate lace applique on the bodice and sleeves of the Duchess of Cambridge's gown paid homage to Grace Kelly's bridal dress. The sheerness of the trailing veil revealed Kate's vintage head wear to be the 1936 diamond 'Halo' tiara by Cartier that the Queen loaned to her as her "something borrowed."