1girl, Sayori (Doki Doki Literature Club), festive outfit, red Santa dress, white fur trim, thigh-high stockings, black boots, cute reindeer antlers headband, smiling, joyful expression, long coral pink hair, side ponytail, blue eyes, light makeup, snowflakes, holding a gift box, surrounded by Christmas decorations, pine trees with lights, soft snowfall, winter wonderland, cozy atmosphere, warm ambient lighting, medium shot, bokeh background, holiday spirit, vibrant colors, digital illustration style.