Marlene gave Jamie Lee Curtis one of her old evening dresses to wear to the 1983 or 1984 (sources differ) Academy Awards. Curtis was at the time engaged to one of Dietrich's grandsons.
Apparently, the gown had originally been made for Marlene to wear in 1942's The Lady is Willing; for the Oscars, Curtis had the gown altered and shortened.
Is this the dress?
The shortened version of the gown was sold by Christie's in 1999 for $ 9 200. The auction house credited it as a Jean Louis creation. Jean Louis only started to work at Columbia Pictures in 1944.
In the film, Dietrich's gowns are credited to Irene.