
Seriously, you can still be feminine, just put some thought into it. Here are some pictures of costumes I found on Etsy that prove how much more fun it is to be creative, rather than slutty.
3D Glasses Dress by nicoleinder

Sushi Dress by SewOeno

Pink Monster Dress by devaniweaver

Nintendo Top by SewOeno

Gun Dress by nicolelindner

Finally, I present "the rules" via the movie Mean Girls...it's amazing.