Back to the clothes you want to be comfy because after eating all the food you may wear a size up then what you are wearing when you get there :). You can check out last years thanksgiving outfit here which is very comfy looking with the sweater. Above are some great fall peices fur vest, riding boots, and a plaid top great worn apart and really great together.
One last thing is the bag above is from Angela & Roi which is a store that specializes in handbags (link here). But that's not the only good part the main thing is depending on which color of bag you buy they donate to a special cause. For example if you buy a pink bag they donate to a cause for breast cancer. So you're not just getting a great bag, but you are also getting the satisfaction of knowing some of the money goes to a special cause. Here is a chart below, so you can get an idea of what color bag goes to what cause.
What is your favorite part about Thanksgiving and what are you going to wear?
1. Plaid Top | Rag & Bone
2. Crossbody Bag | Angela & Roi $93
3. Fur Vest | Forever21 $38
4. Riding Boots | Sole Society $130
5. Skinny Jeans | Frame Denim $210