realistic 8K full-body portrait of a breathtaking, sensual, young European woman with wet, glistening black hair, perfect body, alluring tits, reclining nude in a luxurious marble bathtub at night in a high-rise penthouse. The low, rear-focused camera angle emphasizes her prominently arched bubble butt above rich bubbles and rose petals. Warm candlelight and cool city skyline reflections illuminate her glowing skin. She gazes back sultrily over her shoulder, holding a crystal wine glass. Satin slippers and fine jewelry rest nearby on a marble ledge, with sheer curtains framing the sparkling night skyline. The scene radiates cinematic elegance, bold sensuality, and refined luxury.