A highly realistic, almost 3D-quality image showing a woman's physical transform

A highly realistic, almost 3D-quality image showing a woman's physical transformation from obese to a slim, fit, and happy version of herself. On the left side, the woman is overweight, has a somber expression, and is wearing casual, baggy clothing. On the right side, she appears slim, fit, and radiantly happy, wearing tight sportswear, with a confident, cheerful smile. The background should smoothly transition from dark, dull tones on the left to bright, vibrant colors on the right, symbolizing the positive change in her life. Make sure the cover is in ultra-high-definition 4K quality with a hyper-realistic style, capturing every detail of the transformation. (make sure it's the same person in both versions)