Who is going to walk me down the aisle when I get married?

Not very close to my father AT ALL. Grew up with my mother, my brother is a lot younger than I am. My uncle has two daughters whom he walked down the aisle years ago. I don't want to "steal their daddy from them", although my uncle and I are fairly close. The other male relatives in my family aren't as close either, so who should I choose? Mommy, Uncle, or little bro? I was thinking maybe I could even walk alone.