Hollywood memorabilia dealers at California auction house Profiles in History will offer up the item, which they're calling "the most important film dress to ever come to auction" during a summer sale next month (Jun10).
The gown will be the highlight of the sale, which will also feature Monroe’s test footprints and signature set in cement from outside Grauman’s Chinese Theatre, The Wicked Witch of the West’s hat, Johnny Depp’s scissorhands from Edward Scissorhands and his Jack Sparrow jacket from Pirates of the Caribbean.
Other items include Darth Vader’s light saber from Star Wars: Episode VI - Return of the Jedi, Julie Andrews’ carpet bag from Mary Poppins and Bruce Lee’s 'Kato' signature from The Green Hornet.
The three-day auction will feature over 1,500 lots of Hollywood memorabilia.
Monroe's gown is expected to fetch between $150,000 (GBP93,750) and $250,000 (GBP156,250).