I'm a fan (and you should be too) because Christina is, first of all, able to surprise people. You never know what she will do next, but whatever she does, it's always amazing. You can't label her. You can't say: "Oh, Christina makes this kind of music...", because her next album will be completely different. She always does the unexpected and I respect that. As an artist, you should keep on evolving, and Christina defenitely knows how to do that!
I have never been the person who cries when I see a sad movie or when I hear a sad song. But one day I was sitting in my room, wathing television, and suddenly Beautiful came by. That video was so emotional, sad and relateable (is that a word?) that I started crying. I actually couldn't believe that, because I never did that! And that's exactly the impact Christina can make with her beautiful voice and inspiring lyrics.
The first album I bought was Keeps Getting Better, yes, the latest album she had brought out. So actually, I started at the end... but soon my 'collection' became a little bit bigger when I bought Stripped, which I think is an AMAZING album. So inspiring, so real!! Since a short time, I have the Back to Basics album. What a shame I hadn't bought that one before. So classy, so nice to listen to!! It makes me want to sing and dance and go crazy... 
Christina, because of you I can lock myself up in my room and escape from the real and often mean world, by just putting on your CD. Every lyric, every note I hear you sing, hits me. You make me wanna dance, you give me the opportunity to be who I want to be. Your music is there for me when I need it. Christina, Xtina, Baby Jane, Legentina: thank you for being my inspiration. Will you never stop?