Well ellanova, by the way you mention the whole "cyberpunk attire, mohawks and kilts" I would infer that your style of dressing falls more into the "normal" department than in the Matrix extra department. I don't mean normal like boring or average or anything. Just, you know, you probably wear clothes from modern times.
In a magical dream world I think you should wear some Fashion with a capital "F".
Like say... a "vintage" dress from Hussein Chalayan's Spring 2009 collection that seems to be going at hyper-speed even when you are standing still. Switch out the heel for some cool chunky boots and you would become some kind of legendary woman that everyone would talk about at every conference afterwards until you became an urban legend who's described as actually being akin to the Flash.
Laser Cut Leather Shorts $51.72, Asos.
Back in the real world, you probably ARE already moving at the speed of light everywhere so you don't really need a dress to show it off. If you are on the end of the spectrum that likes being comfortable and leans a bit on the tomboy side then I would keep it simple with jeans in a dark blue or black wash. Leather seems totally appropriate for such an event, but to keep it from looking too cliche I would go with any color other than black. Try throwing a cool leather jacket over your jeans. Or maybe you are a little adventurous and can rock a pair of laser cut leather shorts with a simple tee and a slouchy jacket over it. On your feet I would keep it super comfy so you can walk all over the conference and out with the boy you like without missing a beat. My love affair with oxfords has been well-documented, but they really are the coolest thing you could wear! Especially when they are awesomely deconstructed and will look good with tights or a bare leg.
Minimarket Lace-Up Cut Out Oxford $250, Urban Outfitters.
For partying it up, a leather skirt could be super rad. I like to size up with short skirts so that they don't show my bits. I find that all short skirts are too short! When did I turn into a prude? Anyways, pair that with a cool sweater–this one's a bit cropped so layer a tank under it if you're not into the skin show. Instead of an oxford, try a cool chelsea boot maybe even with a little sock showing. (Socks are very important.)
Striped Boxy Pullover $108, Free People.
I guess I'm imagining you as some sort of super cool cyber-superhero that's still very modern. And what could possibly be better than that?