Other women are lesbians because they have fallen in love with a particular women. Others have gradually realized that they simply prefer women to men. Whatever a women's sexual preferences, it's important that she does whatever makes her happy and what seems to feel best to her. Women who are just beginning to perceive themselves as lesbians often have questions about how being a lesbian might affect their lives. There is a common image that we have of the tough dike who wears boots and has short hair, and seems very masculine.
Appearance is a pretty unreliable way of judging a person's sexuality.
That attractive prom queen is as likely to be a lesbian as the truck driver. It's true that some group of lesbians favor a certain look or dress style, but conforming to any style is an individual decision. Being a lesbian also does not mean that one must choose a certain role and be the masculine or feminine one in the relationship. The thing to do is to be oneself, and do whatever feels most comfortable. Women who are just identifying themselves as lesbians often wonder who they should tell.