Fit depends upon how tight you want it. I wanted it relatively tight, so I ended up going with the XS rather than my normal S. However, this does make the shirt a bit short which is fine for me because it is under a high-waisted skirt.

After the first wash (I washed it inside out purposely), it had defects in the gold on the front of the shirt. I haven't been able to wash it a second time to see if they will go away or if they are actually gold that has come off.