Anyway, it's called Luna, and it's written by Julie Anne Peters.
Luna tells the story of Regan and her older transgender brother (male-female), Liam. During the day, he's a super-intelligent, cynical, and somewhat sensitive and depressive computer geek about to graduate high school- at night, however, he gets to don his wigs, makeup, and female clothing to become Luna, his (or her) TRUE self, if at least for a few hours.
The interesting part is the perspective of the story- rather than being told from Liam's point of view, it's told from Regan's, the sister that has to deal with it all. She has to deal a lot with the trauma of Liam's "transition" as he slowly begins to realize that it's harder and harder to hold Luna in, to keep her hidden. "I'm strangling her," he says, which is of course the last thing he wants to do.
The book's a tear-jerker, and a wonderful example of the difficulties which come with being transgender, and with trying to survive in a world where such a thing is generally looked down upon in a very harsh manner. Liam's father is trying to force him to try out for Sports, which Liam has no aptitude for whatsoever, and their mother is a pill junkie with a cabinet full of prescription drugs for every malady known to man (and then some).
You don't have to be gay, bi, a dyke, a faerie, transgender, transexual, or even metrosexual to understand and pull something from this book- only openminded- and to those of you who wouldn't usually will themselves to read something like this, it might open your eyes a little bit. Being "born in the wrong body," persay is an incredibly painful experience. The emotional trauma is almost irreparable.
Remember, the book's called Luna, and it's written by Julie Anne Peters. Give it a read.