She looks freakish. Tiny head is tiny. I think it was shown that she's 11 heads high. "Normal" is 7.5 heads, and 8-8.5 is more for comic book style exaggeration. Croquis in fashion illustration are 10 heads. Perhaps Bayonetta's character design was intended to look like a fashion illustration, I dunno. I personally don't like it much.
In any case it's been mentioned a lot on the interwebs, such as The Zeonic Front: I don't want to play Bayonetta
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