Personalized Future Astronomer Girls Long Sleeve T-Shirt. Cute girls future occupation design with pink and brown lettering and handprint and heart logo says When I Grow Up I'm Gonna Be An Astronomer on this kids career Long Sleeve T-Shirt - Charcoal. Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL