Right now Forever 21 has a decent pair of biker boots that are good alternates. I made River's purple Heist outfit for Dragon Con this year. I was fortunate enough to find fabric at one of my stores that was dyed close to hers. All I did was cut out the sections that needed blue dye added and restitched them. I used brown badminton netting and fabric paint for the cover....it seemed to work really well. As for the brown shirt, I just got two white ones, dyed them and frankenstein-ed them into hers. It was actually pretty easy once I got started and I'm not great at sewing. Now I hope to start her blue one...I found some fabric that should work, just need to paint the flower on the sheer overlay.