Personalized Cowboy 3rd Birthday I'm Three Women's T-Shirt. Cowboy 3rd Birthday Women's T-Shirt - Heather has cute striped number 3 with cowboy hat and lasso for your little cowboy's special birthday party. Classic ladies' styling with a feminine neckline, sleeves and fit. 5.0 oz., pre-shrunk 100% cotton. Double-needle stitching throughout