"This summer, we'll be welcoming you back to Kensington Palace in royal style," the Trust tweeted.
"See the wedding dress of Diana, Princess of Wales in our new exhibition exploring the intimate relationship between designer and royal client."
The exhibition will open just in time for summer on June 3, with the grounds being opened to the public once again after a 12 month hiatus due to the COVID-19 pandemic.
This will be the first time the dress has been put on display in 25 years - and has also been done so with both Prince William and Prince Harry's consent.
Given William and Kate celebrate their 10 year wedding anniversary this coming week, it's also a lovely additional announcement to come from their royal residence.
Diana's dress, made from silk taffeta is an icon in its own right, featuring billowing puffed sleeves, bows and a 25ft train.
A style born in the 1980s, it's lived through many subsequent seasons, never losing its striking, wow-factor.
Now, it's in a well-deserving place as the main attraction of the Royal Style In The Making exhibition, which will run until 2022.
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This story originally appeared on our sister site, Now To Love.