(Talkloid) The defining feature (Luka/Miku)

I honest to god had no clue she was supposed to be Santa until I saw it written on the reference sheet Luka render: RawBeansP Talkloid based on the designs for the Magical Mirai 2020 Winter Festival (NOT Snow Miku). Miku's design:   / 1300234682773065728   Everyone else's designs:   / 1303878690812473344