Jack Black Six Pack Abs

Jack Black was at the Sundance Festival showing off his six pack abs. I have to get one of those shirts to wear after those big meals around Thanksgiving and Christmas.

Jack Black was at the Sundance Festival showing off his six pack abs. I have to get one of those shirts to wear after those big meals around Thanksgiving and Christmas.
Where can a average person get this shirt??
Do you know where you could get one?