There are two basic types of dresses that Amish girls and women wear.
For the first ten years of my life I had loose fitting dresses that buttoned down the back and aprons that were basically another dress minus the sleeves.
I was thrilled to change to grown up dresses on my tenth birthday, exchanging the buttons down the back for straight pins in the front, the comfortable loose and free dress to one that now fit snugly at the waist. Instead of the little girl apron there was now a two piece contraption, a cape that we called a "hals duch" that was worn over the dress bodice, and an apron that was pinned at the waist and covered the front of the dress skirt.
The first few weeks of wearing grown up dresses were pure misery, but thankfully I got used to wearing them and they no longer bothered me.