Got the final product samples of the Suenaga apparel that you saw in the Anime T-Shirts article - they are gorgeous!
They are also up for pre-order on a few sites which you should be familiar with.
The "d" logo was originally square for the website but when Azami sensei designed the logo for the shoulders, she made it a diamond which looked better.
Anyway, you can get the T-Shirts from the following retailers who deliver to outside of Japan.