Queen's headgear is an important part of royal regalia and is often used to signify a monarch's power and authority. The two most common pieces of headgear associated with queens are the CROWN and the TIARA. A CROWN is a ceremonial headdress that is typically made of precious metals and jewels and is worn by a monarch as a symbol of their sovereignty. A TIARA is a more ornate headpiece, usually made of precious metals and jewels, and is often worn by a queen or other female members of royalty. Both the CROWN and the TIARA are important symbols of a queen's power and authority.