A vivid portrait of a celestial female tiefling with shimmering azure skin, her eyes glinting with an otherworldly fire. Her lush, elegantly curved horns spiral upward, adorned with delicate cosmic patterns. She exudes a mystical aura, her smile revealing a hint of mischief. Her features blend the ethereal beauty of anime with an impressionistic, painted style, reminiscent of an enchanted world. Her hair cascades like a nebula, shifting subtly with hints of starlight and cosmic energy, capturing the essence of an enigmatic, otherworldly demoness.