Keeping cozy in these chill winter days does not mean you have to sacrifice fashion. It's all about layering to pile on the warmth, but to pull it off stylishly you'll need to keep a few points in mind. Take a cue from Olivia Palermo who flawlessly works the layered look. Pick pieces in contrasting fabrics such as wool, leather and faux fur. Start with form fitting basics like a fitted sweater and build with chunkier pieces. Keep palettes in similar hues, with a pop of color to complete this look.