Need advice on what I should be for halloween. Pic of myself included.

http://imgur.com/DrrOp Here is a photo of myself. I am the girl in the middle. I am 5'5 120 pounds. I am not sure what to be for Halloween. I asked over at r/Halloween but, there doesn't seem to be a lot of activity due to it being July. My hair will be shoulder length by Halloween but, I am into getting extensions or wearing a wig. Let me know if you have any ideas. I want to stay feminine.