TRAILER #3: "Maleficent"

The third and presumably last trailer for Maleficent is out, with this one heavily drawing on the goodwill towards the cartoon version. I don't understand why anyone in this movie has to have a fake British accent, because I'm pretty sure none of the characters in the cartoon did. And I also don't think the three good fairies are supposed to look so creepy and off-putting either- what happened there?