That's what Diana Vreeland called this breathtaking, beaded gown when she exhibited it at the Metropolitan Museum in 1974 as part their Costume Institute's "Romantic and Glamorous Hollywood Design" retrospective.
The dress, designed by Travis Banton for Marlene to wear in Angel, was reportedly inspired by the mastery of Fabergé. It cost $8 000 to produce in 1937 -- too expensive for Paramount executives to allow Marlene to add this one to her personal collection, as was her usual custom. Altered, it appeared in several Paramount movies long after its original model had vacated her dressing room on the lot. By the 1990s, the gown was in such fragile condition that it required extensive restoration. It is said that the gown is now preserved in a private collection.
When Vreeland first contacted Marlene about the latter's old movie costumes, the star seemed less interested in golden caviar than in exactly who had told the ex-editor in which hotel she was currently staying:
UPDATE: To see a sketch of this costume, look here!