There a few that come to mind:
Pamela Anderson: $5 Million
I thought she would have more?
Danielle Bregoli: $1 Million at 14 years old
PewDiePie Net Worth: $20M
He is the highest paid YouTube star who makes his living doing commentary on video games, what a life.
Trey Parker and Matt Stone Net Worth: $500M Each (Creators of South Park)
Judge Judy Net Worth: A Whopping $420M
Bjorn Borg:
Famed for his tennis matches against John McEnroe, Bjorn Borg won his first Wimbledon at 20 years old. Retiring at 26, Borg lived in luxury, spending tons of money on his friends. He lived in Monte Carlo to escape the $40,000 in back taxes he owed in Sweden. After three marriages and two divorces, Borg went bankrupt in 1997.[1]