Photorealistic editorial headshot of a beautiful woman facing directly forward, looking into the camera, with a diagonal rainbow prism of refracted light across her face. The atmosphere is dreamy, elegant, and luminous, with iridescent hues accenting her eyes. Shot on Canon EOS R5 with 85mm f/1.2 lens, aperture f/2.0, ISO 100. Lighting: soft studio key light from the front with subtle prism reflection, creating shimmering color bands and delicate highlights. Rendered in ultra-sharp 8K, cinematic photorealism with high-fashion editorial style.