The fantasy of each character represents the personality and behavior of each of them.
Explanation:
The costume of each character represents the personality and behavior of each of them. Juliet is a very pure girl, beautiful and innocent as an angel. Romeo is strong, determined and brave as a knight in armor. The Paris costume represents his heroic and adventurous personality, but it also represented how he was a boy coveted by the girls (astronauts were considered heroes and great future husbands in American culture).
These costumes are appropriate for each character because each of the costumes represented the trait and the behavior of each character. Juliet's dress of an angel represented the character of pure and innocent. Romeo's dress of a knight represented the character of bravery. Paris's dress of an astronaut represented the character of delusion and oblivious.