One of the best ways to stay warm this winter is by layering. But what about those times when it's cold outside, but warm inside? We always keep a cardigan close by for extra chilly days indoor or out! It's the perfect piece of clothing to layer and looks great on everybody! While we prefer the slightly nerdy cardigan look with glasses and pressed shirt, we also like the long cardi for running errands and just hanging out! Click on the pics to see celebs who are cardi crazy! And watch the funny vid below about cardigans from the hilarious show, "The New Girl." :)