Custom content is a wonderful thing- it can transform your Simmies from grubby little miscreants into beauteous beings. This is my current favourite hair:
It's a donation hair that you can get from Peggyzone here (or get it on the DL from Sims Cave here.)
A loverly in-game shot for you:
Fangs to Club Crimsyn for the gnashers. Fangs! Geddit?
I'll let myself out...