A medium shot, 3/4 view of a majestic and cold fantasy empress standing centrally within a crystalline magical castle. She is a stunning woman with a refined oval face, sharp eyes, and long, waist-length black hair with a purple sheen styled in a noble imperial bun, shimmering with starlight. She has a tall, voluptuous figure with a very large bust and wide, rounded hips; she wears a luxurious purple and silver imperial battle robe featuring a translucent silver-blue crystalline bodice that accentuates her curves, with an open shoulder design and a large glowing blue-purple crystal ornament on her chest. A wide silver belt with purple gemstones and flowing tassels cinches her slim waist. She wears a massive amethyst crown adorned with silver droplets and delicate silver bracers with purple gemstone pendants, her slender fingers with light purple nails gently touching the crown's edge. The background is a dark, crystalline castle with glowing purple runes on the walls and silver magic stones on the floor. The atmosphere is mysterious and noble, lit by the soft glow of crystals and distant starlight, with floating purple dust particles and a rich, deep color palette.