Which one do you mean? There are two T-shirts with Ayu's face on them: the CDL ~Future Classics~-shirts (white and black) and the one, which comes with the "Ayumi Hamasaki Live Photo Book 2008-2009".
They're both sold out, I think. I also wanted the white one and was only able to get the black one.
It's nice too, though.
That's the other one:
http://www.cdjapan.co.jp/detailview....Y=NEOBK-691076