A 29-year-old former Brazilian ballerina unseated Taylor Swift and AI tech entrepreneur Lucy Guo to become the world’s youngest self-made female billionaire. Luana Lopes Lara, co-founder of prediction market firm Kalshi, snatched the crown from 31-year-old Scale AI co-founder Guo after the platform hit an $11 billion evaluation and her net worth skyrocketed to $1.3 billion, Forbes announced Tuesday. Guo held the title of world’s youngest self-made female billionaire since June, when the AI