Moschino Cheap and Chic silk dress with slip, bias cut, marked 8 but fits S

Moschino Cheap and Chic silk crepe dress with matching rayon slip. The front of the dress is a different print than the back. The fabric of the dress and the slip is cut on the bias. Cowl neckline in front and back, and gathered insert in the lower back. The belt is petersham ribbon, which is softer and easier to tie than grosgrain ribbon. Marked Italian size 42, US 8, but it fits smaller. I’m size 4 and it fits me. The mannequin’s measurements are 34/26/36, with a B cup. In excellent gently used condition. From a smoke free and pet free home. Cocktail dress, party dress