My current tuxedo shirt collar sticks out one inch above the tux jacket when measured on the back of my neck. It seems a little excessive compared to dress shirt and suit combinations I've worn before.
I may be wrong but it may add to the formality of the tuxedo, is one inch collar showing normal?
As a disclaimer, I am not wearing a wing collar shirt.
This is the shirt I am wearing: http://shop.nordstrom.com/s/david-donahue-trim-fit-solid-french-cuff-tuxedo-shirt/3413499
Thanks in advance for your help!