It may seem early, but we've got a few things on our mind: Christmas shopping. Yeah, we've gotta get through Thanksgiving first, but it's coming, people. And of course, when Christmas is on the mind, so are onesies—because there's nothing we love more than the cozy comfiness of a onesie on a brisk holiday morning. We're ready to join Lena Dunham, Cara Delevingne and Chloë Moretz's gang ASAP. Are you