If you have similar proportions to the form, no deep curves, no significant length discrepancies, etc., and your differences are truly about adding different amounts of volume to the shape provided, then you dont have to go a whole lot smaller
Black Shirt with Blue Jeans: When we talk about the color combination with a black shirt, blue jeans always come to mind, not because of their normal color but because of their classic pairing that is youthful, relaxed, and endlessly cool
80% Polyester 20% Viscose
These shoes were cherished so much that men would even propose to their girlfriends with clogs (yes, seriously)
Would work well with a cropped jean jacket or cardigan sweater