Lucy Guo has officially dethroned Swift as the world's youngest self-made female billionaire—take a look at her impressive property portfolio.

The youngest self-made female millionaire is Lucy Guo, who co-founded Scale AI. Her estimated net worth is $1.25 billion, according to Forbes. Guo started learning to code as a child. After receiving a Thiel Fellowship,

Lucy Guo has amassed more wealth than Rihanna, Madonna and Beyonce, according to a new Forbes ranking, but you’re far less likely to have heard of her.