This is a classic 100% linen tunic style top by Chicos in a size 0 - this equals a women's US size small or a 4.  Lightweight beautiful vibrant blue pattern on a white background.  Long sleeved, notched, side slits, pull over 1/2 button up front, classic collar.  Great for casual/dress or ad a coverup for your swimsuit.
Pit to pit = 19
Shoulder to hem = 29.5