Need help with Christmas Present!!!

Hey guys,

My sister asked me to knit a sweater for her cat for Christmas... being the internet nerd that I am I immediately knew I must make her giant fluffy lap monster a Nyan Cat sweater :D The only problem is that I am not quite at the point where I can make up my own pattern, and I can't find one :( Anyone have one/could make one up for me?

Thank you all for enabling me in this :D