An image released by Netflix shows the actor wearing a new version of the gown, which was based on the original design by David and Elizabeth Emanuel.
The post on the show’s official Twitter account said: “A first glimpse of Princess Diana’s wedding dress.
“Emmy award-winning costume designer Amy Roberts wanted to capture the same spirit and style of David & Elizabeth Emanuel’s original design, without creating a replica for Emma Corrin.”
The original dress was famous for featuring a 25ft train, although the angle of the picture does not allow us a peek at its recreation.
Emma, whose previous credits include Misbehaviour and Grantchester, will portray Diana during the early part of her relationship with Charles – played by Josh O’Connor – in the upcoming fourth series of the Netflix drama.
Last week, Netflix gave fans the first proper look at Emma in character, as well as the first pictures of Gillian Anderson as former prime minister Margaret Thatcher.
The upcoming fourth series will be Olivia Colman’s second in the lead role of the Queen, with production on the new episodes wrapping shortly before the UK went into lockdown earlier this year.
For the fifth series of The Crown, Imelda Staunton will take over the throne from Olivia, while Jonathan Pryce will succeed Tobias Menzies as Prince Philip.
Meanwhile, Lesley Manville and Elizabeth Debicki will be playing Princess Margaret and Princess Diana, although it’s yet to be confirmed who will be appearing opposite her as Prince Charles.
The Crown’s fourth series will debut on Netflix on 15 November.