Yeah, we know. Sweaters in the fall and winter? Been there, done that. But this year’s fall fashion knitwear offerings are not messing around. On the runway, designers such as Marc Jacobs and Stella McCartney presented cool cowl-neck tops paired with a matching skirt, cardigans that go down to your ankles, turtleneck dresses and other inventive plays on Cosby’s signature piece. It's okay to look cozy at the big fall events this year.