I Majored In Geology - Ladies T-shirt Printed to order in USA by professional printers. Ignore any Chinese sellers' bad fake imitations If unsure on sizing, order larger for a good fit. Guaranteed not to wash off or fade. Chest width (inches): S=18.5; M=19.5; L=21; XL=23; 2XL=25 Tee Foundry is an Amazon Registered Brand. Our quality Tshirts are 100% pre-shrunk cotton. Tee Foundry are the only authorized seller, to ensure sizing matches and quality guarantees