A photorealistic, impressionistic oil painting style image depicting a close-up portrait of Mona Lisa within a bustling cafeteria setting during summertime. The focus is sharply rendered on Mona Lisa's face and upper torso, with the background cafeteria scene exhibiting soft, blurred outlines characteristic of a 270mm depth of field. Employ a vibrant color palette reminiscent of Monet's works, emphasizing dappled sunlight and reflections on surfaces. Incorporate visible brushstrokes and a textured canvas surface to emulate the tactile quality of an oil painting.