My Ds was peater pan at 2 also. what we did is find a green t shirt and cut the botton and sleeve raged. Then put it over green long johns (used as jammies after halloween of couse) Cheep easy and no pattern required! I also croched some cool pointy slippers, those I had a pattern for. We fot a lot of complaments on it.
I would post a pic but that former 2 y/o is now 18 so this was before digital camras. (at least before I had one)
DD was tinker bell that year.