Girls t-shirt for older kids. Cool and funky, not too 'childish'. Not too much colour. Example images include variations of unicorns, elephants, flowers, geometric images, hearts, mermaids, flamingos, shooting star, palm trees, ballet shoes, swans, bunnies, smileys, bananas, deer, bears etc. A relevant phrase would be ok, perhaps with a small image e.g., 'dare to', 'dream big', 'heartbreaker', 'shoot for the stars', 'wild and free', 'don't worry, be happy', 'be free', 'chill out' (with say, an ice cream / icy drink image). See examples below.