The youngest female billionaire in the US is only 30-years-old and she owns the burger chain In-N-Out Burger. 

Lynsi Torres is the president and owner of the chain her grandfather founded back in in 1948. 

Her dad took over the business but died of a drug overdose when she was just 17 and then she took it over when her mom died in 2006.  She is said to be a very low-key president. 

Torres has been married three times already and her current husband is a drag racer… she is a big fan of the sport and even won some races herself. 

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