This is as close as I could get with a Caster set.



It exaggerates some of the features of her top, like the ribbons on the back, and there might be dungeon/raid gear I don't have access to that fits better.

Sky Pirate Coat of Casting (no dye, or it changes the primary color )
Ramie Halfgloves of Casting (Soot Black)
Arachne Culottes of Casting (Soot Black)
Patrician's Gaiters (Soot Black)

The ribbon doesn't really exist in the game right now from what I know, but if you have the Amatsu Hachigane event item from the FFXI crossover, you may be able to clip it through some longer hairstyles for a similar effect. Just make sure the hairstyle has bangs to cover the actual headband.

Alternately, here is some of the above suggestion, swapping out the hands and top for the Songbird Jacket and Star Velvet Longgloves of Casting.



Hope this helps a little! ^^;