A total of 10,000 Swarovski crystals were placed one-by-one on the blue dress, and in Lily James's hair as well.
Helena Bonham Carter's fairy godmother gown has tiny LED lights interwoven within the fabric of the dress and would light up every time she would cast a spell.
In the ballroom dance, many of the dresses designs are based on the dresses of various Disney Princesses. Those of Belle from (La bella e la bestia (1991)), Tiana (La principessa e il ranocchio (2009)), Aurora (La bella addormentata nel bosco (1959)), Snow White (Biancaneve e i sette nani (1937)), Mulan (Mulan (1998)), and Ariel (La sirenetta (1989)) can be spotted.
According to costume designer Sandy Powell, she didn't want Ella's main outfit to be rags or a patchwork dress. Instead, Cinderella wears a dress that gradually deteriorates and fades in color, but looked like something she would have worn in happier days when her father was still alive. The dress is made of aqua cotton voile and has small pale pink flowers almost hidden in the material.
Lily James originally auditioned for the role of Anastasia Tremaine before being cast as Cinderella.