I normally wear a size small in shirts, but sized up to a medium because I didn’t want a gap in the buttons across the bust or tightness in the arms. My bust is a 32 DD/Waist is 26” and I love how high the buttons come up.
It fits beautifully. It’s long but I’m very short and planned to tuck it in anyway.
Overall, very worth the money. Hopefully I feel the same after I’ve washed it.