Customizer Little Legends had designed and is currently selling this custom minifig of Hit Girl from the movie Kick-Ass.
The minifigure design is very simple and clean. Custom decals on the torso and face provide the main features, complemented by a hand painted version of hair piece 62711. This bob was recently featured on a variety of LEGO Agents heroes and villains and Irina Spalko from Indiana Jones.
The guns are star corps blasters from The Little Arms Shop, while the cape seems to be typical LEGO fare.
If you look at this reference photo from the movie, you can see that you could further plus this figure to make it just that much closer to its celluloid counterpart.
Although I couldn't find one online, it would be great to have a minifigure tartan skirt to adorn this mini-mite. I did find some decal templates on Flickr, but it would be great to see a rubberized piece to best simulate the pleats and motion of the fabric.
The gloves could be simulated by using BrickForge vambraces with hands in in the same color.
The mobility lost may or may not be worth using part 41879 to duplicate her short stature.
Finally, replacing those blasters with a couple of naginata from Fine Clonier would really seal the deal.
(Pictures via Little-Legends.com and Reel Movie News)