Remember that cotton is not a the best idea because as soon as it gets wet it loses all insulation, so try and not wear so much cotton.
Woolen hat (beanie)
Hair elastics
Sunglasses
Scarf
Bras
Polypropylene long tops/long johns
T-shirts
Long sleeve tops
Hoodie
Waterproof, warm jacket
Gloves
Underwear
Jeans
Sweatpants
Wool socks
Hiking boots (if going hiking)
Good sneakers (easy to walk in)
Sleeping bag
Pillow
Flashlight
Water bottle
Band-Aids (for blisters and such)
High-energy granola bars
Spare batteries
Watch
Lip balm
Toothbrush
Toothpaste
Soap
Towel
Heavy duty garbage bag
Backpack
Science equipment?
Tent?
Camping cooker?
Cutlery & Plates?
Sleeping mat?
Camera?