*See All Photos and read these details* - Fit is short and loose. Arms width is fairly wide. Looks to be a size Men's Small (tag details are washed out) but personally I think this would look super cute on a female too. I've marked Unisex. Neck opening is more wide.

Measurements - (see photos)

Pit to Pit = 23"

Top of neck/shoulder to hem = 23"

Neck opening = 8"

Arm opening width = approx. 8 3/4"-9"