A stunning, hyper-realistic 4k portrait of a woman at the Venetian carnival, her blonde hair cascading elegantly over her shoulders. She wears an intricately designed fox mask, its details exquisitely capturing the sly and mysterious essence of the creature. The scene is vividly rendered in the style of an ultra-detailed oil painting, with vibrant colors and rich textures that bring depth and realism to her enchanting gaze and the opulent fabric of her costume. The interplay of light and shadow accentuates the mask's intricate patterns and the luxurious shimmer of her attire, creating a mesmerizing and captivating image.