Okay a little update before I go to bed.
Separating it into another post for clarity.
I'd like to say that I'm 70% done now with only the boots and socks remaining!
Pinning the cuffs. Bought these blingy buttons because they seem more idol-ish.

Meanwhile, while the cuffs dry from their ironing, making the skirt chain.

And after that lining the top with the black part like Haruka's.

Finished cuffs

Adding decorations to belt and modeling cuffs and chain

Wearing the choker. Ribbons were blurry but they're done.

The costume as it's been hanging on the door. I look at it every single day. ^^

Once again I'd like to thank all of you for all your support on this project!
Your kind words are really inspiring. ^^