She became one of only five self-made female billionaires in 2004.

Let's admit it, we are simply obsessed with J. K. Rowling... and there's no other way. The author of the 'Harry Potter' series, she gifted us with a magical world and made our childhood so much fun! She is a worldwide phenomenon, and it goes without saying that her influence on popular culture is second to none.

(Credit: jkrowling_official)

For the unversed, the seven-volume 'Harry Potter' series follows a boy called Harry Potter who attends Hogwarts (a school for wizards), and battles Lord Voldemort. The series is a classic example in the fantasy genre, reviving the age-old theme of good vs evil.

(Credit: Harry Potter)

The legendary author turns 58 today. On this occasion, we share an interesting fact about her that you probably did not know.

K. Rowling - The World's First Billionaire Author

K. Rowling made history in 2004 as she became the first billionaire author in history. Also, according to Guinness World Records, she became one of only five self-made female billionaires.

The 'Harry Potter' series written by Rowling has sold over 600 million copies, been translated into 84 languages, and adapted into a global media franchise including films and video games.

Although the series ended in 2007 with the release of 'Harry Potter and the Deathly Hallows', the Harry Potter books are still selling in bulk amounts across the world today.

Notably, Rowling has used a huge amount of her wealth for charity. She has co-founded the charity Lumos and established the Volant Charitable Trust, leading several philanthropic activities throughout the world.

In 2012, she was removed from Forbes' list of World Billionaires due to her donations to charity, as well as the high British taxes she was asked to pay.