i don't know if it's you selling on a different site or something, but i just thought you might wanna check out riptapparel.com today (April 14) ASAP. if that's not your work, someone is clearly ripping you off. (putting this comment here too just in case you don't see the other one)
Oh yeah, I've seen this person's design before, so thanks for the heads up. Yeah, they seem to have done their own version of the Sesame Street Fighter thing (which is obviously similar to mine), which doesn't make me angry at all. There are other people who did Sesame Street Fighter stuff before I did, so I certainly don't feel like I own any rights to the idea, you know?
Now, if this person had downloaded my artwork and was selling shirts with it, that would be a different story entirely!