Show HN: ThisShirtExists creates shirt designs from your Stable Diffusion prompt

Author here:

I built this as a side project when I wanted to print a stable diffusion design on a t-shirt as a birthday gift. The challenge is that the stable diffusion images are only 512x512px, so I use other AI models to upscale them to print resolution.

On the site you can directly experiment, i.e. enter a prompt -> get a design illustrated on a t-shirt.

Alternatively, you can upload existing designs, for example from https://lexica.art

Have fun and let me know what you think and how I can improve it :)

Here is an animation of how it works: https://www.thisshirtexists.com/wp-content/uploads/2022/09/t...

What AI model do you use to scale the images up for printing?