Little Caesars co-founder Marian Ilitch is the third-richest self-made woman in the U.S., according to a new Forbes list.

Ilitch has an estimated net worth of $6.9 billion, Forbes reported on Tuesday. Most of that wealth likely comes from the Little Caesars pizza restaurant chain, which she co-founded with her late husband Michael Ilitch in Garden City, Michigan, in 1959. Little Caesars brings in an estimated $5 billion in annual systemwide sales, Forbes estimated.

Ilitch, 90, took the reins as chairwoman of her family’s holding company Ilitch Holdings, which owns Little Caesars, after her husband died in 2017.

Growing up, Ilitch refilled napkin dispensers and salt and pepper shakers in her father’s restaurant, according to Ilitch Holdings’ website. As an adult, she worked in retail and as a reservation clerk for Delta Air Lines before getting married and becoming a full-time mother. The couple invested their family savings to open the first Little Caesars location, the website says.

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