Uniqlo is once again pushing the boundaries of T-shirt creation, this time promising a $10,000 prize to the person who can design the best Nintendo-themed T-shirt. The Japanese clothing chain announced the details of its annual design competition today, revealing a very special judge for the final prize — Mario creator Shigeru Miyamoto.

The competition will be judged by Shigeru Miyamoto

Miyamoto might not be particularly famous for his fashion sense, but the legendary game designer certainly knows Nintendo, having been responsible for Mario, Donkey Kong, Pikmin, and a slate of other much-loved games. The overall winner of the competition will also get to meet Miyamoto at a special award ceremony, and be presented with an autographed Nintendo NX — when the console is finally available, anyway. Second place gets the same invite to the ceremony and $3,000, while runners up will make do with $500 and staying at home.

The competition is open to anyone around the world, but there are some specific rules about the designs Uni-Qlo will choose. In particular, the company says you can't cross the streams on canon: combining Mario and Luigi is fine, but Link can't share a shirt with Fox McCloud, and Wario has to keep well away from those Splatoon kids. All designs need to be submitted by August 31st this year, at which point the best designs will be judged, and eventually made into real-life T-shirts.