Question about Oceans 12-13

What type of material are Brad Pitt’s shirts during these scenes below (they look like SILK and i want to know where i could find such shirts):

http://img211.imageshack.us/img211/4919/51224701ou3.jpg

http://img125.imageshack.us/img125/3971/43902303bg1.jpg

They do look great. My guess is silk but they’re going to be custom made since it was such a huge film.

They really do. I just wish i knew where to get these