The actress first stepped out in the iconic ivory-coloured lace gown while filming her role in 1953 movie Roman Holiday and she later had the frock adapted so she could wear it to the Academy Awards following her Best Actress nomination for the film.

Hepburn won the Oscar and subsequently put the triumph down to her ""lucky dress"".

The gown, which Hepburn gave to her mother, is now being put up for sale by Kerry-Anne Auctions in London later this month (Nov11) with an expected price tag of between $60,000 and $90,000 (£40,000 and £60,000).

The sale will take place on 29 November (11).