Don’t kid yourself, Chloe Moretz — the basic premise of Red Shoes and the 7 Dwarfs is that the classic Snow White image would be severely compromised if she turned out to be corpulent. The third act will deliver the standard bromide about true beauty lying within, I’m sure, but look at the trailer, for God’s sake. The dorky dwarves under the bed nearly faint when rail-thin Snow undresses, and then moan with displeasure when it turns out her slim bod is illusory. Is the trailer saying that fat is ugly? No — that it’s disappointing, at least initially. And yet the p.c., Moretz-endorsed line is that traditional physical allure is meaningless. Sure thing.