Cinematic Fashion Portrait of a Stylish Girl

Create a cinematic, ultra-realistic full-body portrait of a {argument name="subject" default="stylish 20-year-old girl"} leaning casually against a {argument name="background" default="modern dark mirrored wall outdoors"}. She has beautiful, flowing curly hair.
**Outfit & Accessories:** An {argument name="outfit" default="oversized, biscuit-colored branded A/X t-shirt, loose black-wash baggy jeans, and clean white sneakers"}. She is wearing a luxury diamond wristwatch and a delicate gold neck chain.
**Pose & Style:** She is standing in a full confident, comfortable, and luxury fashion pose.
**Quality:** Photorealistic, 8K resolution, high-fidelity details, dramatic depth of field with cinematic lighting.