This t-shirt with an image of Bruce Lee DJing is now selling out after people saw Tony Stark wearing it in the Avengers: Age of Ultron. This isn't an accidental success either because Downey Jr. is such a fan of the shirt, he actually got it into the show.

The Avengers: Age of Ultron pulled in over $191.3 million in the U.S. The numbers will probably balloon up if you add the overseas figures. Robert Downey Jr. was wearing this t-shirt in the film:

The shirt was created by Peter Lee for his company Bow and Arrow Inc. It features a shirtless Bruce Lee, DJing behind a turntable while weaing a gold chain, sunglasses, headphones and a gold bracelet.

The company has an exclusive licensing agreement with Bruce Lee's estate to sell his image on t-shirts.

Since the release of the Avengers sequel, the sales for it has increased 10,000%.