I was going through Ebay as always. I saw that National Capital Historic Sales has a line of Khaki shirts. They appear to be of the correct pattern for the WW2 period. This is good because WW2 Impressions is out of stock.
His items in the past have always been of a decent quality. I have a M41 Field Jacket from the early 90's, that I hold as a standard of reproductions too. It's cut is far closer to originals than most that I have handled.