I purchased this as a nursing mom going back to the office. The size I’m wearing is XX-Large. This is not tight on my shoulders and it isn’t bursting in the chest area. My bra band size is 38. This is the perfect weight to wear year round. I suggest wearing a cami underneath for the light colors. Washes really well too. I did have to cut a few loose threads but that’s my only complaint
I feel like this can be worn professionally and causally.