Sweaters in all shapes, from dresses to coats to hoodies, are our

obsession this week

, including this belted sleeveless wrap cardigan from Twelfth Street by Cynthia Vincent, $69.

And today, Melissa Kirsch, author of “The Girl’s Guide to Absolutely Everything,” helps us pick out the right styles for your body type. There’s also a run down of the six items every wardrobe needs.