"This March 2, 2014 file photo shows Lupita Nyong'o in a pale blue Prada dress at the Oscars in Los Angeles. What happens to the duds after a big awards night can be a peculiar affair that depends on the relationship a celebrity has with a designer. Nyong'o, who won the Oscar for best supporting actress for ""12 Years a Slave,"" was able to keep her gown"