This is what I wore yesterday! The shirt and belt are second hand finds, I have far too few classy basic shirts in my closet, but a fair amount of belts since I like dresses and they are easily complimented by different belts.
Shirt - Second hand (I think it's originally from H&M but I'm not sure)
Belt - Second hand (Pieces)
Skirt - Seppälä
Shoes - Jeffrey Campbell