A shirt made of spandex or lycra much like an Under Armor shirt that a man with titties would wear for support and the appearance of a muscular chest.
Carl developed bitch tit after he stopped juicing up and working out at the gym. He needed a Tittie Shirt to make it look like he still had pecs. Sad Fuck!!!
Female breast that are visible even in a loose fitting tee shirt.
Dude…that girls got tee shirt titties.