Supergirl is my biggest want for a figure, so I'm definitely intrigued. Like many others, 1/8 scale doesn't fit in with the rest of my 1/6 collection. That said, the sculpt looks phenomenal so far (as does the Superman one). If the paint and tailoring are good too, it's a definite buy for me.
My current Supergirl is a 1/6 scale statue, which is pretty good (paintwork aside), but I'd love to replace it with an articulated figure that can hold its own with the HT figures in my collection (even if I need to do some forced perspective posing to make the different scales work).