Rainbow Fun Flutter Sleeve Cotton True Craft Tshirt, size XS

100% cotton with colorful rainbow design diagonally across shirt in front & back with fun flutter short sleeves. Preloved, excellent condition, so good, needs new owner to rock it. Steamed. Tag states XS but think it could be worn by a small, or be a baby tee on a larger size, check measurements. Approx measurements, flat lay: bust: 18" unstretched length: 25" Questions, please ask.