What is visible thong line?

A visible thong line refers to being able to see the outline or impression of a thong underwear through tight or form-fitting clothing, such as leggings, yoga pants, or skinny jeans. It can be considered a fashion faux pas in some situations, while others may see it as a trendy or provocative look. Some people may intentionally wear a visible thong line to make a fashion statement, while others may try to avoid it by wearing seamless or thicker underwear.