I have been VERY overweight till a couple of years ago. I think you can wear most things if they fit. So with those trousers, I would size up to get the loose, relaxed fit the model has. What I wouldn’t do is wear them in a way that stretched the pattern. I think they could look lovely with either chunky sandles or a chunky trainer, plain top tucked in, and either a flowy cardigan, a denim jacket or a biker.