EXCLUSIVE: The Story Behind Princess Diana's Revenge Dress Revealed in 'Diana and the Paparazzi'

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Remember Princess Diana’s revenge dress?

On the 20th anniversary of Diana’s death, Smithsonian Channel’s new one-hour special, Diana and the Paparazzi, explores the contentious aftermath from Diana and Charles’ failed marriage -- and how she used the press to further her standing and the causes she cared about.

ET exclusively debuts a three-minute first look at the special, which hones in on Diana and Charles’ crumbling union and high-profile divorce, and explains the worldwide phenomenon that became known as The Revenge Dress.

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In 1994, around the time Charles’ televised interview promoting a biography was airing -- where he admitted to being unfaithful to Diana with his now-wife Camilla Parker Bowles -- Diana stole his thunder when she was photographed wearing an off-the-shoulder, cleavage-baring black mini-dress with a large jewel necklace adorned by pearls while attending a charity function at the Serpentine Gallery.

Following Diana and the Paparazzi, Smithsonian Channel will also air the one-hour special, Diana: The Day We Said Goodbye, which focuses on Diana’s funeral, which was watched by more than two billion people around the world.

Diana and the Paparazzi premieres Sunday, Aug. 27 at 8 p.m. ET/PT, followed by Diana: The Day We Said Goodbye at 9 p.m. ET/PT on the Smithsonian Channel.