Diadem

Okay kiddo, so a diadem is like a fancy headband that makes someone look like a queen or a king. You know how in fairy tales the princesses wear crowns with jewels on them? Well, a diadem is similar to that.

It's a special ornament that they wear on their head to show that they're important or to make them look pretty. They're made of all sorts of materials like gold, silver, or precious stones like diamonds and rubies.

Sometimes, people wear them for special events like weddings or ceremonies. Diadems have been around for a long time too. The ancient Egyptians, Greeks, and Romans all had diadems.

So, next time you see a princess in a storybook with a pretty headband on her head, you'll know that it's called a diadem.