'Tis the season for sitting by a fire, sleeping in and nursing hangovers, so you're right to want to upgrade your loungewear. And you're not alone. Apparently proper pajamas are enjoying something of a comeback, according to retailers. Maybe it's because they're now cut from better materials, in more modern fits. L.L. Bean has a pair made from oxford shirting cloth and J.Crew is offering a cozy pair cut slim from washed plaid flannel. If those feel a bit too grown up, consider freshening up your around-the-house wardrobe with trim lounge pants and stylishly slouchy shirts. While they're cut for comfort, they're anything but sloppy.