1. For me, the most ideal materials for this suit are leatherette (glossy) and latex. You can use both leatherette and latex as a mix of materials at once.
2. For the veil - chiffon. Perhaps with lace or sequins.
3. To decorate your hair, you can use hairpins in the form of Lycoris flowers (I found pictures with such hairpins and I think they look great!), but fresh flowers are perfect.