Long johns, 3/4 lycra length cycling shorts and knee length cargo shorts. Then basic climbing layers on top, t-shirt, light baselayer then a full fleece. Possibly a gilet if it's cold. If it is full on blizzard conditions then North Face 3 in 1 jackets have a good length at the back for keeping your kidneys warm. Though you can't go too far like this as you overheat quickly
And an Altura skullcap under the helmet pulled right over my ears. And a buff at all times.