This is way too similar to the Dynasty armours in Lineage2. I actually thought it's fanart of it and that's why I clicked it. I'm not saying that it looks bad, because it doesn't, but it's just too similar. If you are looking for originality, you should at least change the colours around a bit.
The only things that I would change, other than the colour scheme, are the shoulder pads - their shape doesn't go with the rest of the armour style - and the chest part - it makes her breasts look really awkward; you should really consider changing that part.
I know the point is that the armour is supposed to be more revealing, but for the chest part, you could still make it sexy even if you change it up a bit. I think if you'd make the cups a bit bigger and perhaps make them meet each other in the middle while leaving like a hole between the meeting place and the rest of the design of the chest armour, I think that would work better.
I'm actually wondering if it is the design of the armour that makes her breasts look awkward, or if it is the breasts themselves that look weird. I think the way you painted the line in the middle of them makes them look too unnatural. I don't know for sure; all I know is that that part of the drawing really bothers me, haha.
Last note, staff is kind of plain. If this is the final armour set and weapon set, then the staff really needs to be more intricate. For starters, the purple in it doesn't go well with the rest of the colour scheme. Of course this doesn't apply if the weapons aren't supposed to go with the armour's style and/or colours.
Anyway, great concept - like it overall with those few exceptions. I've seen your other stuff and I think it's pretty good Would love to see some high end 3d models of these concepts ^-^