I like to think that if I can come out to anyone in my family, it might be my sister. She's very much a zero-conflict, love and let love kind of person. But I don't know how to come out to her. What if she's not cool with it at all? What if she outs me before I'm ready? If she's there to support me, I think she'll be invaluable to have on my side when I finally come out to my parents.
If she is that type of person, then I say go for it. I may come out to my sister soon. I'm thinking I'll go with the word vomit approach. "I'M A LESBIAN! Would you like some tea?"
Me and my sister had a very thoughtful, very difficult (for me) phone call. It lasted about 90 minutes, and I just laid everything on the table. Might not work for everyone, but is sure did for me.
The first (and only) person I have come out to is my sister, I simply told her that I think I might be gay, sometimes saying you think you are can lessen the blow on them. We were sitting playing her xbox at 12:30 in the morning eating doritos soon after christmas so we were both happyand i couldn't stick not blurting it out to anyone! :icon_bigg anyway she took it really well! I think you should tell her as long as you are comfortable doing so!