Affiche publicitaire de produit de luxe avec célébrité

Create a premium **commercial advertisement poster** using the provided reference photo of the person, preserving their exact facial features and identity. Dress them in a sleek monochrome outfit that complements the product's brand colors, confidently leaning against a **giant version of the product packaging** while holding the regular product with a relaxed, natural expression. Use a clean **brand-colored gradient background** with a glossy reflective floor, oversized bold product-name typography in the background, floating ingredients or key product elements around the packaging, and a realistic product shot in the foreground. Include the brand's official slogan (if applicable). Use cinematic studio lighting, luxury advertising aesthetics, ultra-photorealistic quality.