Came out to my sisters last week as bisexual.
Tip: Don't come out to the religious/conservative one first, if you were hoping for validation
Not my greatest decision, but I felt like I had to get it off my chest.
It went great with my other sister, who leans more liberal. It felt great to have someone on my side to talk to, and who had her own experience with "bisexuality/bi-curiosity".
Worth it.