Official shirts

[velasa]

Ever since I finished the series I've been in love with it and desperately seeking t-shirts.  But in all my con-hunting I've only found two (a small red flame skull on black and a large Yoko sketch on tan).  Online I've seen a little more, but.... I don't really trust their legitimacy when the picture of the shirt's a drawn outline with the pattern cropped into it instead of any actual photos.

What official shirts are out thereon the market and where's the best places to look for them?