Beaux Mondes is a French phrase meaning 'beautiful worlds'. It is often used to describe the luxurious lifestyles of the wealthy and powerful, or to refer to the glamorous and exclusive places they inhabit. The term can also be used to describe a person's idealized vision of life. In this context, the crossword solution ELITES is an appropriate fit, as it refers to the privileged few who are able to enjoy such lifestyles.