A great addition to the sportshirts is this pencil stripe Finamore that comes in Tokyo and in Gaeta fit. It's perfect for office use, but also on a pir of jeans it works very well.
The fit is famous, slim and possible to wear over your pants, but also tucked into your pants and a a sweater over it works well. Even with a great clubtie and a blue jacket, this one is the perfect match,
100% Cotton Made in Italy.