Lulu> in edit that I posted:
1-2: top, pants, hair
2-3: pants+falbain, hair, top changes
You don't have to count all outfit changes as 1 change O.o Maybe if you'd add changes only to pants like: longer pants and small design at them it could be one, but with what you post top and pants are two different changes as long as change's big enough to count as evolution... and i moved head elements and wings to 4 and 5 to fit what Firn posted about. Though I think last stage back elements could be bigger, they're hardly visable because their color mixes with outfit color.