Dress to impress!
I like shirts, long and short sleeves, usually go for the more plain style. I don't like a lot of patterns and colors on my shirts. Nice dim grey, with minimal, very subtle stripes, or full white / black / variant of blue.
Blazer jackets whenever the situation call for it. Blue for casual events, black for more classy shit.
Black jeans, or dark blue jeans is my personal go-to.
Black, grey or white socks, or a mixed variant with different color grading.
As for brand, I don't really have anything specific. I usually look at a catalog and order it home, and pick it up at my tailor. For socks however, I prefer Lindenberg.
For underwear I only have boxers, no particular brand.
For shoes I have no prefered brand either. Whatever I think looks nice, and feel comfy. Usually dark colored shoes.