[QUOTE=Oso Polar;21419923]Short answer: given everything else equal the ones that are too big will be much worse.

Now, long answer. To minimize chafing shorts should move as much as possible together with the body as a single unit, so that friction happens between the shorts and the saddle, and not between the body and the shorts. Obviously, to achieve this shorts can't be any loose, they should be skin tight. As I started cycling in 2017, I lost a lot of weight in the first few months, so experienced this first hand - as I was becoming skinnier, I needed to change shorts to a smaller size as they start to chafe.

I second Oso Polar's comment. Get a quality pair of shorts that fit snugly....the tighter, the better.