Actually, after what he'd done to you, I'd sooner be someone else... I'd rather keep my head on my shoulders.
Now, getting all serious here: Wow, you've pretty much shot a bulls-eye with this costume. Every detail from her unique pistol to the Mad Hatter-style top hat and Joker-inspired makeup has been recreated with pinpoint accuracy. And I reckon, considering the different patterns on the outfit, that would be pretty damn hard to do.
If they ever do a Borderlands-inspired event at a convention, you'd slip perfectly into the announcer's booth, bottom line. Well bloody done, keep up the good work!