A joyful girl dressed in a harlequin costume, smiling brightly, exuding cuteness amidst the vibrant atmosphere of a Venetian carnival; her full-body portrait captured in high resolution and hyper-realism, reminiscent of an exquisite oil painting by Frank Frazetta, with vivid colors bringing out the charm and elegance of her attire and surroundings, intricate patterns and lively details enhancing the captivating scene.