Riki back-stab T-shirt for The International.
His and hers - "Already dead".

Took many, many screen captures, from various angles in game (vs. Bots) and used Photoshop to piece them together.
Enjoy.
:)

Edit: It was suggested that I should upload a more detailed version, so I changed the resolution when I exported from Photoshop.
I think it makes Riki's face and some of the other details clearer in the JPG file. Please let me know what you think (both good and bad) so I can make changes if needed.