I think that your hair looks cute as is. I also agree with your mom that you should NOT dye such a beautiful natural color. You would regret it later on. If you really want to get such a dramatic style change, then I would choose either twenty-four or seventeenA. You want to keep the layers in the front long in order to flatter your face shape. I would narrow your choices down to two or three and then discuss it with the hair stylist. They might even have the computer technology to show you what you would look like with each haircut. Good luck!