what kind of trousers should I wear?

[Europeshoe1]

I'm very fat and usually wear skirts but would like to mix it up. I only ever wear flat shoes - usually flatforms or leopard pumps or supergra, that sort of thing

What style of trouser should I wear and where can I buy them in a size 20ish?

I buy a lot in Cos but I doubt their trousers will go near me. I love that look though