Lovely 21++ Lily James Cinderella Blue Dress. The dress is elie saab couture, and with long sleeves, plenty of sparkle, and a construction that looks light as air, it totally feels like the kind of magical number a fairy godmother would whip up for you to wear to the party of. Lily james and richard madden's costume from disney's cinderella on display. Find out more details about costume designer sandy powell's creation here!