Gender Fluidity

Is anyone else here gender fluid? I was wondering if you could tell me how you know you are as I am struggling to identify whether I am or not. I identify as female right now but I am probably one of the most masculine ones in my group (consisting of 7 boys and 3 girls). However, I do also love getting dressed up with lots of make up and nice dresses. I do feel quite waves between feminine and masculine so could this mean I'm gender fluid?