Orihime was one of the few characters from Bleach that I actually liked and she jumped out at me right from the start. She and I are very similar in a lot of ways and it was a solid choice for a simple, easy-to-wear costume.
The pants and shirt I picked up from a thrift store and modified by sewing stripes of red fabric to the pants and painting petals on the shirt. I was lucky enough to find the most beautiful wig on ebay and the hairpins were a gift from my friend. The shoes are a basic pair of yellow keds.
For such a simple, last-minute costume, I really enjoyed wearing it. I'm surprised I wore it as many times as I did!