Lupita Nyong'o — The Blue Prada (2014 Oscars)

Nyong'o won Best Supporting Actress for 12 Years a Slave at the 2014 Oscars wearing a custom light-blue Prada gown that Miuccia Prada designed specifically for her skin tone — a radical act in a fashion industry that had spent decades ignoring Black women. Nyong'o went from unknown Kenyan-Mexican actress to Vanity Fair cover star, Lancôme ambassador, and fashion's most celebrated new face overnight. One dress, one Oscar, one night — and the entire fashion industry had to recalibrate who it considered beautiful.