One thought I had was that the shape of the dress might be significant. She went from a dark, tight, structured dress to one that was flowing and shapeless. The colors on her hexagon dress went from dark to light as well. The hexagons also might have some significance. I looked up the symbolism of hexagons and they are known for strength, efficiency, and the building blocks of creation. Here's an article on hexagon symbolism: https://thebigdeer.com/hexagon-symbolism/