An adorable fluffy bunny cub dressed as Sherlock Holmes, with bright blue eyes, is investigating a whimsical mystery in the heart of old London. Rendered in a stunning Pixar-style, the scene is incredibly detailed and vibrant, capturing the essence of an animated film with a photorealistic touch. The cobbled streets of London provide a picturesque backdrop, with realistic lighting casting soft shadows and creating an immersive cinematic atmosphere. The composition is perfect, with every element meticulously arranged to enhance the bunny's curious expression and detective ensemble. The scene is brought to life with a boost of vivid colors and natural volumetric lighting that highlights the textures and depth, all masterfully rendered in Unreal Engine.