This is the second version of the Kotobukiya DC X Bishoujo Collection
the first version (which i don't have, yet) is:
the design for the Kotobukiya's collections are so pretty!
there's a supergirl's version of Kotobukiya's as well and she is pretty too, here's a picture of her:
The earlier version of the batgirl is from the silver age collection:
This figurine corresponds to the costume that is featured
the first appearance of it in January 1967 from Detective Comic #359
When I have the time to get to it, i'll post more information about Batgirl!
✎ From the ☾ moon that shines bright as a shooting star ☆