What others have said:
Other than going to a shirtmaker and specifying what you want,
Just buy the shirts that fit the closest to what you like and take them into a tailor and get them tapered in at the sleeves and waist.
I have done this with success. I buy any shirt I like for whatever reason, whether it be for work or play, and take it in to get tailored. I have spent more money on tailoring the shirt than the shirt itself when they are thrift buys!
Hope this wasn't...