I contacted the concept artist who drew Glory, asking what was on one of her pant legs. He wasn't sure. But he revealed the concept behind her outfit was a workman's coveralls that she had tied off at the waist.
...and since I wanted to pay homage to that idea this meant hunting down a vintage junior fitted coverall pattern with a front knee-seam.
(I love how I can now lay out fabric in my house to cut it out than have to go into the hallway of an apartment)