A few months ago, an article about Mark Zuckerberg's closet came into my sphere. He's notorious for walking into business meetings in jeans, a t-shirt, and zip-up hoodie. The writer noted how his bizarre logic of cutting down on the decision making process in the morning was a quest for efficiency, and I laughed; of course I think like Zuck.
The important thing about this article, the thing that I had somehow never been told as a kid or even as a fashion industry professional was painfully obvious. DON'T HANG YOUR T-SHIRTS. Especially not your crap fast-fashion shirts that you picked up because you couldn't be bothered to wear something nicer.
The reason is simple, you'll boat neck their collar. Fast fashion garments are made to be disposed after a few wears. So they will feel the impact of this shift quicker than your more premium garments, but even those will eventually give way to your t-shirt becoming your girlfriends favorite off-the-shoulder blouse.
Speaking of fast fashion though, I validated the purchase of these garments back in the day by wearing them on hundreds, if not thousands, of occasions. This practice actually undermines the entire apparel industry though (by setting the value of the garments lower than a living wage), so I no longer shop at these types of stores.