Wannabe (noun)

1. A person who aspires to be something or someone but has not yet achieved it.
2. A person who imitates or copies the behavior or style of a person or group they admire.

Origin:

From the phrase "want to be", first recorded in the 1980s.

Examples:

1. He"s a wannabe rock star, but he"s never played in a band.
2. She"s a wannabe fashion designer, but she"s never studied fashion.
3. He"s a wannabe chef, but he"s never cooked professionally.
4. She"s a wannabe socialite, but she"s never had a successful event.
5. He"s a wannabe athlete, but he"s never played in a competitive game.