Personalized Cute Jellyfish Big Sis Youth T-Shirt. Cute big sister, future big sister, big sister to be Youth T-Shirt - White with adorable, girly, kawaii, jellyfish with bows. For jellyfish lovers and sea lovers. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.