Dominique Osbourne, mature lady, British royal family member, elegant posture, pearl necklace, curly brown hair, subtle makeup, luxurious evening gown, satin fabric, low neckline, long sleeves, golden accessories, diamond earrings, holding a champagne flute, standing, Buckingham Palace, grand staircase, red carpet, ornate chandelier, softbox lighting, cinematic composition, warm colors, high-society event.