THE iconic lace gown Audrey Hepburn wore when she collected her Best Actress Oscar for Roman Holiday is up for auction. The piece was adapted from a version designed by Edith Head that the actress wore in the last scene of the film in 1952. Prices are estimated between 40 - 60 thousand pounds.... Known by the star as her "lucky dress", the ivory full-skirted look was given to Hepburn's mother, Ella van Heemstra, who in turn gave it to a friend living in America. The dress has since been stored away in a box at the bottom of a wardrobe, until the family decided to sell it. The sale will be hosted by Kerry Taylor Auctions - the same auctioneers who sold the famous sheer dress the Duchess of Cambridge wore to her university fashion show in 2002. "This beautiful lace dress is important because not only was it worn in the film Roman Holiday but was also worn to collect the Oscar itself," said the auction house's founder Kerry Taylor. "It is the only time in the history of Oscar dresses that this ever happened to my knowldege.