A life in modelling ain't for me....
I recently got hold of the shirt in brown which I think goes really well with the yellow text. What I like about them is they are decent 100% cotton, and despite several washings DONT shrink. Added to that, the print is a screen print application and not one of those transfers that peel off or shrink when you iron them - as such the image will last.
Loads of other merchandise too (but I like the T-Shirts best!)
You can see the range here - Got A Ukulele store