Elegancepedia
Mode

Audrey Hepburn movie costume Roman Holiday (1953) white lace midi dress with shawl collar (restyled as her 1954 Oscar dress) by Hubert de Givenchy

In 1952, the then young and unknown Audrey Hepburn was cast in Paramount film Roman Holiday directed by William Wyler as Princess Ann, Edith Head the head costume designer of Paramount designed her wardrobe. 

The Roman Holiday farewell dress

In the closing scene of the movie, Audrey Hepburn as Princess Ann held a press conference where she would meet Joe, the reporter she fell in love for the last time. In that scene, she wore a white lace midi dress with a shawl collar, wrap-over bodice and fitted waist, styled with a pearl choker and a Juliet style hat. 
Audrey Hepburn movie costume white lace midi dress with shawl collar in film Roman Holiday (1953) designed by Edith Head
Audrey Hepburn with director William Wyler of Roman Holiday wearing the Ann lace dress
Paragraph. Cliquer ici pour modifier.
Audrey Hepburn movie costume white lace midi dress with shawl collar in film Roman Holiday (1953) designed by Edith Head
Audrey Hepburn with director William Wyler of Roman Holiday wearing the Ann lace dress
Audrey Hepburn movie costume white lace midi dress with shawl collar in film Roman Holiday (1953) designed by Edith Head
Audrey Hepburn wearing Princess Ann lace dress for her screen test of Roman Holiday

From the farewell dress to Oscar dress

In 1954, at the 26th Annual Academy Awards, Audrey Hepburn wore a sleeveless floral lace dress with a belt. It is actually restyled from the Roman Holiday Farewell lace dress by Hubert de Givenchy, by then Audrey Hepburn's favorite designer.

Audrey Hepburn won the best actress wearing the dainty lace dress.
Here is a video clip of Audrey Hepburn accepted her her Oscar award in the lace dress.
In 2011, on November 29, the lace dress was sold at auction for £84,000 by Kerry Taylor, a British auction house.