Photorealistic portrait of Sydney Sweeney as a stunning young woman with her signature wavy light brown hair wet and slightly messy from steam, fair skin glistening with sweat droplets, seductive subtle smile, piercing blue eyes looking at the camera, perfect curvy athletic figure with ample cleavage and toned abs, wearing sexy emerald green lace Calvin Klein bra and matching panties with white logo waistband, sitting on a wooden bench inside a traditional Finnish-style sauna with vertical wood panel walls and benches, steam in the air, holding a black iPhone 15 Pro in her right hand taking a selfie, left hand gently touching her bra strap, soft warm lighting with highlights on her wet skin, highly detailed skin texture, realistic sweat and moisture, Canon EOS R5, 85mm lens, f/1.8, shallow depth of field, 8k ultra realistic, cinematic composition, golden hour sauna glow