Create a 4K HD, photorealistic image by seamlessly combining the individuals from the provided input images into a single, cohesive group composition. Arrange them in a natural, candid pose that suggests relaxed interaction. Ensure that the unique facial features, expressions, and likeness of each individual from the input images are preserved with absolute high fidelity, remaining completely unchanged. Render the entire scene in the distinctive style of a classic instant film (Polaroid-style) photograph. Apply a subtle, artistic blur with a shallow depth of field to achieve a soft, film-like effect. Illuminate the subjects and scene with consistent, soft warm lighting, suggesting a cozy, intimate environment. The backdrop should be a simple, smooth white curtain, reinforcing the candid and personal aesthetic. The final output should convey a vintage, high-quality group portrait.