Here is Lee in Minsk. Notice on his jacket how long the lapel is. It's huge. It goes down the whole length of the jacket.
They are really into lapels over there, and Oswald's arrest shirt was from Russia. It was soft material, with no stiffness, so the collar and margin folded over easily into a long lapel.
On Doorman, we can't see his left collar because of the placement of Black Tie Man into the picture. But, we can see that long lapel which is manifested by the thickness of the material on that side. It's twice as thick as the other side because it's folded over into a lapel, and it looks twice as thick. That is a Russian shirt. He brought it back with him from Russia after living there for three years from 1959 to 1962.