I don't know if anyone else has this problem so please don't laugh if it's just obvious 
Or do, whichever.
I like to wear blouses/shirts casually, so not office attire. So I usually have it unbuttoned casually at the top. But I like the collar kind of wide and relaxed looking. It moves constantly, particularly if it's linen, and I'm always rearranging it.
Do other people just pin them down and try not to make the pin visible? Or is there some other obvious method I'm missing?