Estimate: $150,000
Where: At the 2015 Academy Awards
Here it is: The custom Calvin Klein dress is embellished with 6,000 pearls, embroidered on the body
Accompanying: Matching jewelry
Estimate: $200,000
Where: At the 2007 Academy Awards
Here it is: Swarovski crystal-encrusted Armani Prive dress
Estimate: £250,000 (at the time it was about $390,000), although the royal family denied this claim at the time
Where: Wedding to William, Duke of Cambridge, in April 2011
Here it is: a wedding dress designed by Sarah Burton, creative director of fashion brand Alexander McQueen
Accompanying: Cartier Halo Headdress, designed and made for Queen Elizabeth in 1936
Estimate: Auctioned in London in 2016 for $923,000
In: Tiffany & Co at the opening ceremony of the "Tiffany Breakfast Restaurant" (1961) on Fifth Avenue
It is: Hubert de Givenchy's "Little Black Dress"
Accompanying: Classic Holly Golightly accessories, mouthpiece, string of pearls, black hat and opera gloves
Estimate: $2 million
In: At the 1997 Academy Awards
Here it is: Christian Dior's John Galliano dress
Estimate: $4 million
In: At the 2013 Academy Awards
Here it is: A Dior Couture dress
Estimate: Around $3.5 million
In: At the 2009 Academy Awards
Here it is: an Elie Saab dress
Accompanying: Lorraine Schwartz's emerald pendant earrings with a ring
Estimate: $100,000
Here it is: A Christian Dior Couture dress
Accompanying: Vintage Harry Winston jewelry, including emerald cut diamond stud earrings, platinum diamond plaid bracelet and olive-pointed cut diamond cluster ring
In: At the 2014 Academy Awards
Here it is: An Armani Prive dress
Accompanying: Chopard jewelry, including opal earrings and diamond bracelets and rings
Estimate: Princess Diana was originally auctioning off the dress for charity before her death, which was bought by a businesswoman for £100,000. It was later sold again in 2011 for £240,000.
In: White House in Washington, D.C., 1985
Here it is: a Victor Edelstein dress
Accompanying: Sapphire brooch necklace
Estimate: Sold at auction for $4.6 million in 2011
In: In the 1955 film The Seven Year Itch
Here it is: a dress designed by costume designer William Travilla
In: At the 2007 Academy Awards
Here it is: A mint green Valentino dress
In: At the 2014 Academy Awards
Here it is: A Chanel dress
Accompanying: Tiffany & Co's Blue Book Collection Jewelry Emma Roberts
Estimate: $95,000
In: At the 2001 Academy Awards
Here it is: A Valentino skirt
Accompanying: Van Cleef & Arpels jewelry
Estimate: $80,000
In: At the 2011 Academy Awards
Here it is: A Valentino dress
Accompanying: Tiffany & Co.'s 'Lucinda' necklace