Now, a little background on Jack and Melody: they were both plain-looking at best. Melody had mousy brown hair which she usually kept back in a ponytail, a flat chest, and an average face, with maybe a little flab around her tummy. Jack had thick almost-white hair, wore glasses and braces, was very thin, and had a weak chin and bad acne.
But as they watched each other, this began to change. Jack watched as Melody lost her flab; her hair turned jet black and curly, flowing down to her waist. Her face shifted to become very beautiful, in fact she was stunning, with luminous green eyes staring out from a face with full lips and white teeth. Her body became toned and lean and tan, and her previously nonexistent breasts suddenly inflated until she sported a pair of DDs. She suddenly found herself wearing a black tank top showing her cleavage and jean shorts that hugged her butt.
Melody, though, couldn’t take her eyes off Jack. He grew taller, tanner, and his hair turned a deep blonde. His glasses vanished, showing bright blue eyes, and his braces left behind perfectly straight white teeth. His acne was wiped away and his chin squared off. He gained hard muscle all over his body, becoming significantly bigger but still staying lean and aesthetic. He found himself wearing tight jeans with a cowboy buckle that showed off his huge bulge, and a flannel shirt that was halfway unbuttoned, showing off his hard chest.
As Jack and Melody looked at each other, they grew hornier until finally they gave in and started making out. Soon they were down on the ground, going at it, tearing at each other’s clothes.