Royal Toppers is a term used to describe the traditional headpieces worn by royalty. The two most common types of royal toppers are tiaras and diadems. Tiaras are typically made of precious metals and stones, and are often decorated with intricate designs. Diadems are similar to tiaras, but are usually simpler in design and made of less expensive materials. Both tiaras and diadems are worn by members of royal families to signify their status and power.