Yes, now available on the My Nintendo store are these lovely Team Super Mushroom and Team Super Star shirts, available in kids and adults sizes. Delivery on these is expected between 19th and 28th September, with pricing set at £17.99 for kids sizes and £22.99 for adults – plus the usual shipping charges, of course.
It gets better, though, because you can also throw a free keychain set into your order by redeeming a My Nintendo download. It'll cost you 100 Platinum Points if you want to claim them.
Those of you in North America should still be able to grab these t-shirts from your local region's store for $29.99.
Have you already picked which side you'll be on? Fancy grabbing one of these t-shirts to boast about it in real life? Let us know in the comments.