I've bought a couple of t-shirts from https://soundshirts.com and am very happy with them (got ASDR and TR808 ones for m'self) and got a bass one for t'other half, but this isn't quite as L as we'd hoped, would say it's on the slim side of L.
Anyway, the people at soundshirts have said they're knocking up a new a bass shirt with a MusicMan 4/1 headstock so I've ordered one but they said keep this one rather than send it back. I've no use for it but since they're so nice I thought I'd give it away here! First to PM me will get it - just send me a SAE with a large stamp and it's yours!