So I've shown you how to make a casual look for school, and now here's the real deal.
Anything pink, red with white accents will do just fine (small use of polka dots amp up the cuteness) I used a dress, but you are limited to that. Hello Kitty will also approve of those bow flats you're wearing as well.
I used a white belt and polka dot earrings to pull the outfit together. DO NOT FORGET THE BOW. REPEAT. DO NOT FORGET THE BOW. Keep all your essentials in a cute purse (bonus points for you if you have a Hello Kitty purse!)
You can go all out with white face paint, but light foundation will do well. You can do a Hello Kitty inspired eyeshadow look or heavily use black eyeliner (which I prefer more). Yellow eyeshadow or liner for the nose and black eyeliner for the whiskers. Do lips and hair as you wish.
(Optional) Nail Art: http://www.youtube.com/watch?v=SdHlNMPFr_Y
There aren't much videos on this so.......... *runs behind my friend Kat*