LowTee Swimsuits
If you have an old favourite tshirt (mine is my black, Halloween Hard Rock Maui T shirt with Skeletons surfing), you can now save it by sending it to LowTee and have it converted to a speedo style pair of swim trunks.
Check Maddie's concert tour tshirt out;
I've got a sneaky suspicion however, that the creators of this fashion brainstorm must be targetting a certain fit segment of the market. Their sizes max out at "L" for Large at 34-36 in waists.