The whimsical, messy topknot was the style of the Summer. But this hair staple is getting a more polished makeover (and a shot of steroids) for the Winter months. Sanaa Lathan, Christa B. Allen, and Sarah Hyland were all spotted sporting over-the-top buns. And it's one look you won't be able to re-create without a little extra padding. Use a sock or rolled-up hair extensions to create the shape you desire. Start with a slicked-back high ponytail. Then pin down your stuffing and cover with your hair, tucking in all the ends. You can go smooth and sleek like Sanaa and Christa, or leave a few tendrils hanging like Sarah. This is one holiday hairstyle that rivals the star atop the Christmas tree.