In a new exhibit containing Christian Dior dresses at the Victoria and Albert Museum, you can see Princess Margaret's 21st birthday dress. The dress is known for it's flowing white skirt, which looks something out of a fairy tale. Princess Margaret worn the dress in a photograph taken by the royal family photographer Cecil Beaton, to celebrate her 21st birthday. The exhibition at the Victoria and Albert Museum is about Dior's impact on Britain, and it features many Dior dresses. Many members of the royal family have worn Dior over the years such as Princess Diana and Meghan Markle. So, if you happen to be in London, go see Princess Margaret's famous 21st birthday dress! To see what the dress looked like, click here. Information from Harper's Bazaar Image by Koch, Eric / Anefo