At what age do you have to be to know that you can't judge a book by it's cover? He may be dressed like that because he has spent the whole of his life giving selflessly to others, I know of plenty of 'suits' that are sweet on the outside but the meanest bas*ards in private.
Also at what size should a young woman stop showing her midriff because of all the spare tyres hanging over her jeans? I don't know the answer to that one but I do know it's none of my business!
In the mean time I'll carry on wearing jeans and t-shirts until I no longer find them comfortable, then I'll join the belt and braces brigade and start wearing trousers with an 18" zip and a waist band under my armpits.
