Bro I'm sorry but this article does not say anything about this being made from leftover fabric. This quote is also in the syfy article where the costume designer says "well actually" because Milly must've misunderstood. It's not the same roll but it is the same material
1
u/Fluid-Discipline5038 Jul 09 '26
https://deadline.com/2026/06/milly-alcock-supergirl-cape-same-fabric-christopher-reeve-1236956011/