Usually some form of short sleeved T-shirt, although I also have a few long-sleeved T-shirts.
Then I'll often have one of my jumpers on over that, provided it's not too hot. One of my jumpers is a rather coarse woolen one, and I need a long-sleeve shirt on with it, otherwise my arms get really itchy.
And trousers are usually some sort of tan or dark blue. Your sort of generic type. Or sometimes it'll be a pair of dark jeans (I don't have many sets of jeans though).
Socks are just whatever I have.
Shoes are my brown pair of boots.
No hats (unless its snowing, and even then only if I have one around, which currently I don't).
No gloves (unless its very cold, when I'll also probably where my scarf).
No necklaces, rings, piercings, ear rings, makeup, watches, bracelets or any other accessories.