Corsetry-type lacing wouldn't help you make it bigger unless you wanted to wear it with the sides open, no
Or you could make panels (in a contrasting colour?) with the corset-lacing, then set them into the sides, maybe?
though if open sides aren't your thing, you could wear it with a same or contrasting color shirt under it, that could look cool!
Ooh, or put the corset-lacing on the original t-shirt, then add the contrasting panels underneath, so it looks like you've got open lacing over a different coloured t-shirt underneath.
(This would obviously be a more roundabout way of doing it, but maybe handy if you don't want an extra layer of fabric in hotter weather.)
no subject
Or you could make panels (in a contrasting colour?) with the corset-lacing, then set them into the sides, maybe?
though if open sides aren't your thing, you could wear it with a same or contrasting color shirt under it, that could look cool!
Ooh, or put the corset-lacing on the original t-shirt, then add the contrasting panels underneath, so it looks like you've got open lacing over a different coloured t-shirt underneath.
(This would obviously be a more roundabout way of doing it, but maybe handy if you don't want an extra layer of fabric in hotter weather.)