Not that big of a reference picture *squint* but I think I can help.
For the diamonds on her bodice and sleeves, I would either use heat n bond on diamonds of the gray fabric to attach them to the white base, or fabric paint, with masking tape to tape off areas to keep white so you could get nice, straight lines. For the stockings, get a pair of tall white stockings and...you'd have to paint and wear them at the same time, is all I can manage to think up. ^^;
"Katsu, every time I see your avatar I automatically think, 'Wow, she's really annoyed today!'"
Done | Red Mage Viera
In Progress | Vault 34 Jumpsuit | Sniper Wolf
Planned | Catwoman | Snow White
Cons | ALA | AOD | Cherry Blossom Festival | Fanime