I'm guessing the bit of bare thigh that's causing the confusion was shopped in. Perhaps it was a longer dress before it was shopped. Two things lead me to this conclusion, the first is the strange line of shadow where her thigh meets her knee. This line of shadow is what causes her legs to appear to be crossed twice, giving her reversed feet. The more telling error is the fact that her right hand casts NO SHADOW on that same thigh. If you cover that bit of thigh with your thumb, her legs look perfectly normal.
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