The Tummy Trilogy is a series of three children's books written by Gavin Aung Than. The books include "Tummy Talk," "Tummy Trouble," and "Tummy Time," each featuring colorful illustrations and engaging stories that explore themes of friendship, adventure, and the importance of healthy eating. The main character, Tummy, is a playful and curious creature who embarks on various adventures while learning valuable lessons about food and nutrition. The series is designed to entertain young readers while promoting positive messages about health and well-being in a fun and relatable way.