Hello Kitty Prom Prep is an online game at 43g.Com. You can play Hello Kitty Prom Prep in your browser for free.The best day in Hello Kitty's life is here. It's prom night and she needs to prep for the fab event. She will need a new and great dress and the most glitzy and fun accessories. Begin the game called Hello Kitty Prom Prep and use all your skills to help her.