As Ty walked towards upstairs he saw a couple enter the store; they were both 16, but both short and underdeveloped. The boy was skinny and quite short, standing only 5'5'', and his girlfriend was only 5'3''. It seemed their mutual physical immaturity had been the common point that began their relationship. They loved each other a lot though, Ty could see that, so he decided to make life a little better for them.
As the two began looking at Spider-man comics Ty began to exert his power on the girl, whose name was Rebecca. Slowly, but visibly, she began to inch upwards in height, at the same time her breasts swelled larger, her hips flared out and her butt grew larger and rounder while her whole figure became curvier and her blonde hair became softer, silkier and a little longer, growing down from her shoulders to her upper back. These changes finished before her growth, and Ty looked at shapely, curvy girl who now stood 5'7'', two inches taller than her boyfriend.
Only Rebecca and her boyfriend noticed too. Her conservative jeans and t-shirt had shifted to a mini-skirt and low-cut tank top. Her ample, DD cleavage almost spilled out of the top of the shirt and her toned, bare midriff showed, making her look all the more a shapely cheerleader-like girl. And still she kept growing, now standing 5'10''. Her boyfriend, Milo, looked on in awe as his now unbelievably sexy girlfriend continued to grow.
She passed 6 foot, leaving Milo's eyes level with her neck and offering him a good view of her cleavage. And she was still growing. Finally she stopped at a giant 6'5'', a whole foot taller than her boyfriend who just looked up at her in awe. Ty wanted them to be accepting of the change and they were, though Milo looked uncomfortable as his giant, gorgeous girlfriend drew stares from all over the room. The top of his head reached Rebecca's chin and his eye looked almost directly at her breasts.
Ty could hear them talking, Rebecca reassuring Milo for, apparently, the hundredth time that she loved him, then bent over and kissed him. Deciding this was as good a time as any to bring Milo up to speed, he quickly grew the boy as well, adding muscle to his frame as he grew, until he reached a stunning 6'9'' with a muscular body similar to Ty's own. The two giants continued looking around the store like nothing had happened and Ty moved on to the upstairs.