Hudson’s Bay Men’s dress shirt

Worn once for wedding (I seem to attend a lot of them), and it cost me a fortune, not worn since. Some mild yellowing on the collar and I’m not sure why, hence the price. It might have been when I went mustard swimming, I can’t remember. Subtle pinstripes makes you more aerodynamic. 15.5 neck, 33 body, fits well but not “fitted” (traditional fit).