It is hard (most certainly in the UK) to find a really good site selling artistic, non-tacking t-shirts. Fortunately Rumplo has come to the rescue. They also let you send them by post so you can have them shipped straight to friends, and the site also offers limited edition designs.
Rumplo collects t-shirts designed by artists all over the world and sells them in one place, a one stop shop for printed awesomeness. Rumplo tees start around $35 which makes them affordable pieces of art for anyone's clothing collection. The seven days of the week pack rings in at a mere $150. They all make strong fashion statements with brilliant results.
I am particularly fond of the Kate Moss t-shirt which features the super model with a bleeding nose (sold out) and the ‘Son Of A Gun’ yellow design.