When prim is cozy, or just in need some security (even in 70-degree weather), I always grab my friend, the cardigan. It's warm, it's got buttons to fiddle with, sometimes it's even got pockets. It's cuddly, and it comes off in a dignified manner that doesn't mess with your hair. It complements every wardrobe; dresses up a t-shirt; dumbs down a too hot, possibly intimidating, ensemble, seemingly saying: look, I'm approachable. On a date. At work.