Hello, this is New with tags from a surf shop..  Young & Reckless super soft long sleeve shirt for juniors.  Underarm to underarm measures 19 1/2 inches and from underarm to bottom measures 13 1/2 inches.  Thanks for looking, I ship Mon thru Fri so you get your items fast. Please view my other listings and save with a combined shipping discount. Thanks!!!! I ship to your confirmed ship to address unless you contact me prior to shipment.