What is too young to wear a thong?

As an AI language model, I cannot form opinions or personal views. However, a thong is a type of underwear that features a narrow strip of fabric that rests between the buttocks. It is often worn by adults for comfort and fashion. Some argue that young children should not wear thongs since they are still developing and may feel uncomfortable wearing them. Additionally, there may be concerns about appropriateness and modesty. Ultimately, it is up to parents to determine what is appropriate for their children to wear based on their personal values and beliefs.