Sara Blakely, the inventor of Spanx, has been declared by Forbes as the world's youngest female self-made billionaire. According to the publication, the fact that this 41-year-old made her billions without the help of a husband or an inheritance is what makes her such a successful icon.

See ladies, even inventing something as simple as fat-squeezing undergarments can make you a self-made billionaire. So what are you waiting for?