I’m not sure what to call this shirt. Is it cosplay? Is it just a geeky design? What we have here is a shirt failing to hide a Wonder Woman costume underneath.
The shirt is made with the sublimation process, which takes superheated ink and binds it to the fabric of the clothing. The result is colouring that’s very resilient but can also produce little stretch marks or imperfections around the seams. The approach is a great way to get that all over colouring that’s needed for an effect like this.