Create a captivating, high-resolution baby portrait. The central subject is an adorable, cheerful infant with bright, curious eyes and a soft smile. Position the infant in a cozy nursery setting, adorned with whimsical and subtle decorations like plush toys, soft textiles, and a gentle, natural light source. The image should feature a delicate color palette dominated by soft pastels (e.g., dusty rose, mint green, sky blue, cream), ensuring warm, diffused lighting to evoke a sense of tenderness and serenity. Capture every detail of the infant's expression and skin texture, aiming for a photorealistic and heartwarming aesthetic.