Layering: Wear a moisture-wicking base layer (like merino wool or polyester), an insulating middle layer (fleece or down), and a windproof, waterproof outer shell.
Extremities: Bring warm, wool socks and waterproof, insulated boots that aren't too tight.
Accessories: Don't forget a warm, fleece-lined hat, scarf, gloves or mittens, and sunglasses or goggles to protect against the intense snow glare.
Sun Protection: Sunscreen and lip balm are necessary because UV rays reflect off the snow.