L&B, Violet Bottler was the Tooth Fairy in Terry Pratchett's Hogfather - and maybe Soul Music too, can't quite remember.

Liebling's having too much fun showing people his tooth for the tooth fairy to take it away. OK, OK, so I didn't get my act together the day it fell out and Liebling isn't bothered. DH wanted to do the tooth fairy thing and I didn't (I remember this as being the first really major lie I caught my mother in and even when I knew she still went with it - Liebs is as bright and, in other respects, stupid as me about this so I reckon we're better off without).