Chunky white sweater, black leggings and black shoes (can be heels, but no need. Biker boots work just as well). Just make sure the sweater (or shirt beneath) covers your butt. That's simple leggings rules. This outfit is very easy, yet pretty.
Classic Layers - Old Navy Honeycomb Knit Sweater in black, JCrew Factory Classic Button Down Shirt in Navy Gingham Check, Kohl's Rock & Republic Denim Rx Berlin Skinny Jeans in Dark Blue Wash, Lulu's Hot and Edgy Taupe Knee High Heel Boots, Old Navy Faux-