Question for fashionistas!!! What are the top winter fashion trends of 2009/2010?

Okay, so I'm writing an article about Winter Fashion. I know that coats, and boots and dark colors are in but I need specifics. What type of boots. Are UGG's still in? Or different types of boots? What type of sweaters? Are hats in? I know skinny jeans will always be in but are leggins and tights in? Thanks for your answers people!! :)