This is a mystery shirt.
Is it from the USA? The UK? What stores are confirmed to carry it? It is obviously another 'retro style' shirt with the old laughing Sonic stock art. They've tricked it up with a black/white cut that somewhat abstracts him and adds interest. The red phrase at the top says "Say hello to my fast little friend" which is a play off "Scarface" (a movie) quote. You can see the "Sonic the Hedgehog" logo-tag and TopHeavy licensed it, though it isn't common. It has also has (on the back at the top) 'Sonic the' in white and 'Hedgehog' in black ink and white background.
Scarface info credit to SonicEmerald.