When it came to fashion, Princess Diana was a woman of impeccable taste. Rarely if ever was the former Lady Spencer spotted out and about in anything but the most stylish of ensembles, so it's no surprise that her most memorable outfits - a collection of couture dresses - are getting their very own documentary. Put up or action in March at the biggest ever UK sale of her clothing, these gowns each had their own very special tales to tell, and said a lot about the lady who wore them.