Knit dresses can be so great IF you have perfect shape around the hips and butt. Otherwise they can often just draw attention to the area that women are most self-conscious about.
I think this young lady does a great job finding a knit dress that feels every bit as cozy and comfy as you want a knit dress to feel in the Fall and yet it draws attention to her legs and not her hips.
Misdirection most well-played.