DISNEY HAVE STOLEN MY ARTWORK

I don’t know what to do. I am so upset. Can anyone help me?

My painting was created back in 2010, (see it HERE) and since then so many people have expressed their love for it, not just on tumblr, but in many places. At least 9 people had it tattooed on their bodies. It’s one of my favourite images I created at University and I was proud of it in many ways.

Disney have used it on a cosmetics bag HERE (look at the back)

and they have produced a Tshirt HERE with a really similar design clearly modeled from my painting

I’m so mad because I have no chance at getting Disney to do anything about it. I had so much respect for the company and now I am just SO upset and disappointed.

Any help, advice or signal boosting would be amazing. And thank you so much to the kind person who messaged me about this.