Be dressed to impress
Be dressed in a very elegant and formal way
A big break
First chance or an opportunity for fame
One-hit wonder
Successful for the artist only once
A household name
A very well-known person
15 minutes of fame
A short moment of celebrity
A has-been
A sad, desperate ex-celebrity trying to maintain their fame
self-made
Someone who reached success without any extra help
To judge a book by its cover
To make an assumption about someone based on their appearance
Once in a blue moon
Very rarely
To be on the ball
To be clever and efficient
Steal someone's thunder
Draw the attention away from someone
One in a million
Unique
In the spotlight / in the limelight
At the center of attention
Claim to fame
The reason why someone is famous
Cream of the crop
The best of the best
to look up to someone
to admire someone
Child prodigy
A very talented child
To make a comeback
To become famous again
The price of fame
The consequences of being famous in terms of privacy and lack thereof
Blockbuster film
A very popular film
Overnight celebrity
Someone who has become famous in a very short time
Put someone on the map
Make someone become famous