Sled riding bonfire party?!?!?!?!!?!?!?!?

ok so my bff just called and invited me to her house tmro. She said it's like a sled riding party/bonfire!!!! I am reallyyyyy excited!!!!! I need to know what to wear since we will be outside playing in the snow and all that and it is realllly cold here!!!!!! I wanna look good but i don't wanna freeze!!!!! I also wanna make a good impression on her parents too so i ABSOLUTELY POSITIVELY HAVE TO LOOK GOOD BUT I NEED TO BE WARM!!!!!!!!!!!!!!!!!!! Use polyvore please!!!!!!!!!!!!!!!!!!!!!