[nobodyorother]

It's provided on the shirt itself (self-evident), so it should be fine to distribute copies of the shirt.

[PhasmaFelis]

No no, the source code for the shirt. You know, the code you compiled into fabric and stitching.

[tedunangst]

The GPL also requires providing a copy of the license.

[wiml]

You could include it on the care instructions tag in tiny tiny print.

[tedunangst]

Problematic if you wear the shirt in public and allow someone to take your picture. You must provide them a copy too or your license to wear the shirt is revoked.

[pksadiq]

> ... your license to wear the shirt is revoked.

Well, you have 30 days time to comply.

[jdormit]

Put it on the back of the shirt.