Growing up on a dairy farm in Osseo, Wisconsin, Diane Hendricks envisioned herself growing up wearing suits, driving nice cars, and working in a city.

Today, the 77-year-old woman has a fortune estimated at $20.9 billion, nearly double what she was two years ago, and has topped the Forbes list of America’s richest self-made women for the seventh consecutive year, according to CNBC.

Most of her fortune comes from her roofing company, ABC Supply. Hendricks founded the Beloit, Wisconsin-based company with her late husband in 1982 and is currently its president, with full control, according to the company website.

ABC Supply reported revenue of $20.4 billion last year and has more than 900 stores, according to Forbes.

“I don’t want to be a farmer”

When she was 10 Diane Hendricks looked out the window and thought “I don’t want to be a farmer and I don’t want to marry a farmer,” she told Forbes last year. Instead, she imagined herself wearing “a blue suit, having a nice car and being independent.”

That fantasy combined with the image of her parents working on the farm made Hendricks dream of a career of her own. However, later and specifically at the age of 17 she became pregnant and finished her last year of school while living with her parents.

Three years later she filed for divorce and separated from her “school sweetheart”. As a single mother with a child, she now did various jobs, until she also worked as a waitress-bunny for Playboy, while at the same time she was building her career in the field of real estate, based on her statements.

“That’s when I really started looking at a career, the career I always dreamed of which was to be in business,” Hendricks said.

Sales of $1 billion for the first time in 1998

The path finds her meeting and marrying manufacturer Ken Hendricks in the 1970s, with the duo going on to create ABC Supply. The company hit the $1 billion milestone in annual sales for the first time in 1998, according to the company website.

Hendricks is still based today near Beloit, home to fewer than 37,000 residents. He has bought and transformed several historic buildings in the city, and has spent millions of dollars to rebuild abandoned buildings and attract new businesses to the area, notes CNBC citing Forbes.

In 2017, Hendricks opened a local “career center” with the goal of hosting workshops for middle and high school students in fields such as programming and construction. The program aimed to bring teenagers into contact with “the value of real work,” he told Forbes at the time. “The response from the kids was ‘wow, is that a welder’s job?’ They can go to a trade school to become a welder and make $50,000 a year. These are good jobs. Very good work,” he said.