I'm just above tailbone length, it's only around 3-4 centimetres left, I think. I have a long lower back and I've been trimming off damage and trying to keep a thick and even hemline, getting from waist to tailbone has taken ages. Waist was about 29.5" on me and I reached that in September 2006, tailbone is around 37".
I haven't had to do any major changes but I notice that right now I easily have ends sticking out from almost any bun I try to make. I have to learn to get those properly wrapped under and away.