I've recently come to find that a lot more people seem to be layering a plain coloured shirt (or maybe it's a lightweight jacket) with a plaid/patterned shirt and a plain coloured t-shirt. I'm just wondering what materials are best for this combination, and the outer layer (plain coloured shirt) is something I don't have in my wardrobe but I would definitely love to add, so any recommendations would be perfect.

I know this is vaguely described but hopefully something has seen/has this outfit so they know what I'm talking about!