The dress, designed by Elizabeth Emanuel, is one of the most iconic wedding gowns in recent history. The elaborate white gown notably features 'thousands of pearls, silk layers and a 25-ft train', reported Daily Telegraph.
Most recently, the gown was exhibited twice a year at Althorp, the Spencer family estate, as part of an exhibit called 'Diana: A Celebration'.
Besides the wedding gown, both the prince will receive other items that were featured in the exhibit, including their late mother's diamond tiaras, family paintings, letters, home movies and additional pieces from her wardrobe.