I notice there's quite a bit of variety in how Trads dress.
Some are into dressing "up", dressing well, etc. while others are completely comfortable in T-shirt and jeans (unfortunately, this doesn't exclude females *sigh*)
I suppose it's a question of culture -- I mean the culture you received from your family. That is, how you were raised, what you grew up with, what you were taught is "normal" or "correct".
You can see this vividly at Mass. On Sunday, you wear your Sunday Best, right?
I've seen everything from a nice suit jacket & dress pants, all the way down to polo shirts and golf shirts. Heck, I've even seen T-shirts, though these might have been young people who aren't "regulars".
And isn't it interesting that women are supposed to show off their legs during Mass, though a man wouldn't dream of wearing shorts? For that matter, even in my dreams I don't appear at Mass with bare feet, but women wear flip-flops and other sandals with bare feet *all the time*, especially in hotter climates like Texas.
For that matter, I've often heard it said that it's immodest for men to show their arms. But if that were true, it would be even worse for the women to show off 97% of their arm with their various dresses, etc.
When a man wears a short-sleeve button-down shirt with a tie, for example, that sleeve goes down to the elbow. Women's short sleeves are measured in centimeters that you can count on one hand.
I just find it interesting how different standards of dress are for women vs. men. Would a man wear wild colors to the office, or have ANY of his legs or upper arms showing? Never. But women's clothes are SO varied. I guess it's a testament to how different women are from men, and how vanity tugs at woman's nature much more strongly.