When you're sitting on a plane for eight hours or more, you don't want to be regretting your wardrobe choices. Being comfortable, but presentable is key for a long haul flight. When dressing for a flight, it's all about layers. Bring a fuzzy sweater that can double as blanket or pillow. Wrap on a scarf to ward off the chilly air conditioning. Toss a pair of fuzzy socks in your carry on bag.