Definition & Meaning of "the [belle] of the ball"

What is the origin of the idiom "the belle of the ball" and when to use it?

The phrase "belle of the ball" is believed to have originated in the 18th century in England, where it was used to describe the most beautiful and popular young woman at a dance or ball. The term "belle" is a French word meaning "beautiful," and it was commonly used in English to describe an attractive and charming woman. The phrase gained popularity in the 19th century and was commonly used in Victorian society to refer to a woman who was the center of attention and admiration at a social gathering. Today, it is still used to describe a woman who is the most beautiful and admired person at an event or gathering.