With reference to this question:
I'm about to order a couple things from the store but I find that S/M/L/XL/XXL/XXXL garment sizes vary wildly from one t-shirt manufacturer to another and would rather not have the hassle of sending stuff back to the US from Europe if it's the wrong size.
It would be useful to have a sizing chart listing what S/M/L/XL/XXL/XXXL mean in terms of actual inches or centimetres (chest size, length).