The link appears to be only for women.
Clearly what to wear depends on what time of the year. If going to Italy during the warm to hot months, I would recommend against taking blue jeans. They are heavy and take up more space and they are too hot for hot weather.
I like kakis.
North Americans that are touring in Europe frequently wear tennis or walking shoes instead of hard soled shoes. Some Europeans once said they could pick out the Americans because they wear athletic shoes. I have noticed that more Europeans on tour wear athletic shoes as well.
I have found walking shoes to be much more comfortable if walking a lot, than hard soled shoes.
As a general rule, I don't wear T-shirts when touring, unless I am at the beach and I rarely go to the beach in Europe.