This is.... absolutely... full of.... KICKASSNESSIFICATIONALISM!!!
I love it.
I love how you didn't make the outfit flat against her collar bone but instead ruffed it up and added shadowing, so many artists (good artists!) forget little things that really make the work pop and end up with what I like to call 'flat' clothing. I am one of them.. because I'm lazy. You on the other hand are amazing and wonderful and I love everything you do.
Also, the background is a nice touch. I have trouble with picking backgrounds sometimes, I don't want something boring but I also don't want something that takes away from the work. You hit the balance perfectly. Amazing.