Assistant Lucy Bishop poses for a photograph with Princess Diana's Emanuel ball gown from the 1986 'Diaghilev' collection at Kerry Taylor Auctions in London November 27, 2013. The dress is expected to earn £50-80,000 (US$ 80-130,000) when it goes on auction December 3. REUTERS/Suzanne Plunkett (BRITAIN - Tags: ROYALS SOCIETY FASHION ENTERTAINMENT)