The white sweater and light blue skinny jeans go great together. The pink scarf sets off the outfit and makes it perfect. The shoes go so well with the pants and shirt. The bracelet is amazing and cute with the outfit.
Winter - Puffy Vest (Northface is the best for the sporty look) but if you want to dress it up with another brand with a lil more fashion would look great too, cute slim jeans tucked into a great boot, styling hat, scarf.