Which shirt, the one on the cardboard or the one she´s wearing? Or maybe just any generic shirt? How do you define a hole? Is it a certain diameter or is it just anything that can pass, say, light through? How far down to the molecular level do you go? Because at a certain point there really isn´t a shirt anyway, just a whole bunch of molecules hovering around each other so the answer would be "0" since there is no shirt. But if you mean the orange/red shirt on the cardboard and a simple definition of "hole" meaning what we can see on said image, they would be 16. 4 holes for torso, limbs and neck and 2x6 holes punched through. Prove me wrong