There is no fixed number — but cultural and practical conventions exist. For daily wear, 3–5 bangles on one wrist is common across most South Asian traditions. For occasions, 7–11. For a full bridal look, 15–21. The most important factor is that all bangles are the same size — a mismatched bangle will slide and catch. In some communities, odd numbers are preferred; in others, even numbers. Follow your own family tradition.