Elizabeth Florence Emanuel is a British fashion designer who is best known for designing, with her former husband David Emanuel, the wedding dress worn by Lady Diana Spencer on her wedding to Prince Charles in 1981. Since then Elizabeth has developed her own label and worked in costume design for airlines, cinema, pop video and television productions, as well as providing a couture service to some of the world's most famous women.

The wedding of Prince Charles and Lady Diana Spencer took place on Wednesday, 29 July 1981, at St Paul's Cathedral in London, United Kingdom. The groom was the heir apparent to the British throne, and the bride was a member of the Spencer family.