Tag is XS but it is plenty roomy based on measurements.
Shown in photos on 34 bust torso.
I believe this would be fine fitting up to a medium, or small if you plan to wear thick sweaters under.

Approximate Measurements:
Chest from underarm to underarm: 20
Front length top to bottom hem: 34
Sleeve from pit to cuff: 21

Payment is required within 48 hours of end of eBay auction, or immediately with any BUY IT NOW item. I ship next day (or even same day if early EST) in most cases so you will get your item even faster if you pay quickly. All my items are described as accurately as possible and measurements are provided to evaluate proper fit. Color in photos may be slightly different on than actual item due to lighting but is represented as accurately as possible. I do not accept returns. Thanks!