The five richest actresses in the world, the last one is impressive. Number 5. Tori Birch Fashion mogul and actress with a net worth of $1 billion. Number 4. Kim Kardashian Reality TV star and entrepreneur amassing $1.2 billion. Number 3. Rihanna Music and fashion icon with a burgeoning empire worth $1.4 billion. Number 2. Cheryl Sandberg Tech Executive and author accumulating a wealth of $1.7 billion. Number 1. Oprah Winfrey Media legend and philanthropist topping the list with $2.5 billion.