I've watched the evolution of practice wear stay on par with the evolution of uniforms the past 10 years.
Our first all star uniform was heavy polyester with a feather skirt , full length top, and a long sleeved body liner. I tried to get the gym owner to get the fancy new sequin spankies, and she said heavens no as she clutched her pearls. The practice wear then was tshirts and soffees.
We moved on to to crop tops with the metallic trim and shiny spankies, we also moved to tank tops and soffees.
Then we had a uniform with cutouts, bling, and zebra. The girls started wearing sports bras and soffees to practice. Some girls still wore tank tops or tshirts, what they were each comfortable in.
The next uniform was a GK style one. The girls all started wearing spandex shorts, yoga shorts, and sports bras to practice.
I feel like as the uniforms get more athletic and sleek, so does the practice wear.