I've never, ever, known a grown woman who affected a baby doll, sex kittenish voice who didn't come from a screwed up background; usually, at the very least, the father was missing.
I've previously said that "gay voice" is the surest giveaway of homosexuality in men.
Sex kitten/baby doll voice is probably the surest giveaway of phoniness in women.
It makes perfect sense: phony voice = phony person.
That rule applied to Madonna's English accent, Hillary's black accent, and Obama's black accent.