OK, the sizes are like Ronseal. If you think you need a t-shirt that fits the "snugger" figure, ask a few of the people who came last year of the same ilk. If XXL fits a 17 stone (full of passion) 6 foot 4 rugby player it just might fit you.
Just remember, you will be drinking and eating, and showing your arrse that night and will have to put your "comfy" pants on (Map of Africa is optional), so you will probably need a suitable size t-shirt.
Girls, no it will not make your chests bigger, but increases your "hunny" potential.
Chaps, yes they are instant fanny magnets.
No, I haven't even booked them yet. I am waiting until my love child is born before I start haggling. They will be polo shirts in the region of Â£15, not including P&P, and you will like them, or fear my wrath.