The costume worn by Judy Garland in The Wizard of Oz. See SWNS story SWWIZARD; The sweat-stained costume worn by Judy Garland in The Wizard of Oz is set to become one of the worlds most expensive dresses by selling for a staggering £750,000. Dorothy Gales blue and white gingham dress is one of the most unmistakeable items of clothing from film history. It is thought Garland had around ten dresses made for filming of the 1939 classic – but many were recycled by MGM and reused for other films.