The iconic 'revenge dress' worn by Princess Diana will soon be up for sale but the public will be able to see it in London and three other cities before it goes under the hammer

Princess Diana's "revenge dress," which she wore to a Serpentine Gallery fundraiser in 1994, will be auctioned by Sotheby's New York on Dec. 9.

Worn by Diana, Princess of Wales to an event at London 's Serpentine Gallery in June 1994, her little black dress didn't merely set a trend - it inspired a whole genre.

The dress is estimated to sell for between £110,000 and £220,000

Its estimated worth? Somewhere between $150,000 and $300,000.