I mean, how would you make a shirt where the pieces are 18" wide? I know there's a tradition of piecing sleeves to save fabric, but you'd have to piece the back with 18" wide fabric. Well, possibly a little guy like you wouldn't, but anybody else would. What I'm saying is that the "real" Chambray he sells from the supposed 18th century looms is 150 cm wide. I realize the kind you got might be different, but I've never heard anyone mention 1/2 meter widths before now. Not that I've followed the subject closely, but still. It sounds improbable.