Rather you call it Japanimation or anime, the Japanese style of cartooning has a few distinctive factors which are hard to ignore. The chunky hair styles are angular and sharp, while the stand-out facial feature is undeniably the huge eyes and wide irises. While you can easily fashion your hair in anyway you wish with enough effort, changing your eyes to resemble an anime character was at one time, pretty impossible.
It seems that a few companies are now starting to produce Extra-Wide Contact Lenses which give you that deer-caught-in-the-headlights wide irised look. Ranging from prices between $30-$50 a pair, depending on the company you purchase from. Cosplay was never this realistic.