The fabric of her tunic - at least from that screenshot- appears to be either velour- or most likely microsuede. Which makes sense because it looks like they used microsuede for Anakin's Clone Wars costume. Microsuede isn't a form of actual leather suede. It's a synthetic fabric which has a similar napped surface, sometimes offering stretch depending on the weave- and the reverse side is typically a plain weave. You can find it at Joann's or most fabric stores that offer a decent selection of materials. I hope this helps. As a side note, I have to say the costume designs for this show are quite impressive.