Jack

Jack couldn’t help but smile as he watched himself in the mirror. His body had always been toned and muscular, but there was something about the new shirts he had bought that made him feel even bigger. He loved the way they felt as they clung to his body, tight and form fitting. Everywhere he went, he got looks of admiration and envy, and he loved it.

He had noticed the shirts getting tighter and tighter as he wore them, but he didn’t mind it. He enjoyed the feeling of the fabric hugging his body, especially after a big meal. His pecs and biceps felt bigger, more prominent even if they were softer.

The best part was when he worked out. His sweat soaked directly into the shirts, locking its smell into the fabric that wouldn't wash off. He loved how the smell constantly followed him around, giving him a permanent light high while he wore them. His mind settled into a daze, placated by his own self-absorption and distracting him from the further changes.

As he bulked, his belly grew bigger and rounder, filling out the shirts. He didn't realize that was the reason he loved how the shirts felt even more, feeling warm and soft whenever he wore them. His body hair had grown thicker and longer, a dense coat now covering him fueled by the constant sweat held to his skin.

However, he hadn't noticed his gut growing bigger and bigger until one day when he walked past a mirror and saw his midriff. He pulled the shirt up, shocked to see a large round pouch attached to his front. As he ran his hand across the fuzzy cushion, he felt more relieved from how nice and soft it felt. He couldn’t help but feel proud of himself, his body becoming stronger and more imposing.

Jack smiled in the mirror every time he saw himself, happy with his new shape as he continued to grow. He was big, beefy and furry, and he loved it. In the back of his mind, he couldn't help but feel his shirts had something to do with it.