I'm half-welsh (and the other half is of interesting descent), so I have black hair and ruddy skin. In the sun, I go very dark. This is my Barbiegirls avatar:
Most of the body type options are caucasian-stereotype, and certainly the skin colour: the darkest you can go is .. hmm, sort of caffe latte colour. This is the curliest hair available (afro styles? Forget it). You have no nose options (mine is much more potato-like). Height and weight? No way. Everyone has to be skinny and knock-kneed.
Maybe more options will come post-beta, but I think it's shameful that there aren't more by launch.