The Reformation Jaclyn Satin Corset that I wore exactly once before realizing I'm not actually a corset person.
Size 4. Black satin. Mid-length corset style with metal links up the front that make you feel very "I have my life together and also might know how to tango." Seaming up each side, smooth back, and the kind of piece that transforms literally everything—throw it over a simple dress, cinch it over a tee shirt, suddenly you look like you tried. Note - there's anti-slip at the top seams so it doesn't slide down if you want to wear it without anything below.
I thought this would make me the kind of person who casually incorporates corsetry into everyday outfits. Spoiler: I am not that person. But you could be! And honestly, you should be, because this thing is too good to sit in a drawer hoping I'll become more interesting.