Pair Professional Makeup

Hey i'm going to a Twilight party and theyr'e having a character costume party and i want to go as Alice Cullen. Any help on what she might wear? Hmmm i'm going to order some of those cool contacts...and might order some good professional costume makeup for the pale skin. I have lightbrown/blonde hair...but in the book alice has short spiky black hair...i always imagined alice as a blonde but in the description when they are at a lunchtable bella describes her that way so.... I was debating whether or not to cut my hair and style it or get a wig. What do you think is better? It may be hard to find the right wig.
What do you think she would wear? I know the Cullens are usually pretty casual...I was thinking like a black or dark denim skirt with a pair of grey leggings(the type that are cut off above the knee.) And maybe some black ballet flats. As for shirt maybe something long sleeve that is grey with a cool looking vest or something. What do you think? Thanks!