I usually wear S or M (1.75 63kg), but I got this one in S and it was still loose on my body. If you have a slim body, you need 1-2 sizes smaller and generally don't try regular fit Tommy unless you want it loose on you (like in the pictures).
Unfortunately, it's going back for return because there is no XS. Otherwise, good quality and nice color.

Quite good quality, easy to iron, well-sewn, color does not fade, does not crack when turning the collar from use, fits very nicely on a classic male body (broad shoulders and strong torso). It is not a slim fit. It is regular. The price is high but over time it definitely pays off.