A Plad lime green button up short sleeved shirt (complete with pocket protector and pens) hiked up brown nerd pants.. suspenders and red shoes... big thick glasses and a "i heart star trek" pin *evil smiles*
you have very nice legs.
Make the shirt non-plaid and the shorts more hippie-esque than geeky, get rid of the suspenders, glasses and pocket protector and I think I have that outfit.