Costume designer Sandy Powell is nominated this year for her work on Hugo, and won her second Academy Award for the 2004 film The Aviator. Singer Gwen Stefani made her screen debut as platinum blonde actress Jean Harlow in the Martin Scorsese movie. Stefani looked right at home as a young starlet attending a film premiere with Howard Hughes (played by Leonardo DiCaprio) in this shimmering white gown with art-deco diamonds and a fur-lined cream-colored satin opera coat that’s adorned with orchids and pearls. It’s simply divine. No wonder Powell won!