Simon Cowell, 57, will see-in the final of the X Factor tonight alongside his act, fighting for the top spot, Rak-Su

The TV star rose to fame with the launch of Pop Idol in 2001, where he starred as a judge.  He became known for his controversially harsh comments and was then asked to judge American Idol from 2002. 

His fame grew with the launch of the X Factor in 2004 and Britain's Got Talent in 2007, and with the discovery of One Direction on The X Factor in 2010, became one of the most talked about names in the music industry. 

But how much is Simon's net worth? 

Simon is worth more than £300million for his Syco Entertainment company. 

Syco manages the likes of The X Factor, which has its own version in 45 countries, and Britain's Got Talent, with shows that follow a similar format in nearly 200 countries. 

The company has managed music acts like One Direction, Little Mix and Fifth Harmony. 

Syco Entertainment has sold over 200 million albums and achieved 180 number one singles worldwide. 

With his extraordinary amount of wealth, Simon splits his time between London and Los Angeles. 

His London home is in Holland Park and is believed to be worth £10million. 

But the Holland Park mansion is thought to be nothing compared to Simon's Beverly Hills home. 

The luxurious 9.335 square foot property has six bedrooms, six bathroom, a state-of-the-art gym, a luxury spa and a swimming pool. 

Someone else who has made success in the music industry is Look What You Made Me Do singer Taylor Swift. 

Taylor, 27, burst onto the scene in 2006 with her self titled country album.

She later made the switch to pop music, and her most recent album, 1989, sold 10million copies worldwide.

A sellout tour to accompany the album netted Taylor made millions of dollars, but how much is she worth in total?