For me femininity portrays itself in one way ,movement and gestures , you can be big, small , attractive ugly,wearing old clothes or anything else if you have that soft flowing movement then you will be feminine if you have not then it does not matter what you are wearing you will not be feminine (just my opinion) it is something that flows out of you from within you , can you learn to be like it ,I hope so but you have to think of it as a one way street .
