A big name/noise - Idioms by The Free Dictionary
a big name/noise
a big noise
An important, successful, or influential person. Did you hear that Kelly got promoted to senior analyst? She's a big noise now.
a big ˈname/ˈnoise,
a ˈbig shot (informal) an important person: ‘What does Ian’s dad do?’ ‘Oh, he’s a big shot in the City.’ OPPOSITE: small fry