Who said "Be yourself. Everyone else is already taken."?

This quote is attributed to Billie Jean King.

Be yourself. Everyone else is already taken. - Billie Jean King

"Be yourself. Everyone else is already taken."

Billie Jean King

Professional Tennis Player American Born 1943 (age 83)

"Be bold. If you're going to make an error, make a doozy, and don't be afraid to hit the ball."

"Champions keep playing until they get it right."

"I really believe in the philosophy that you create your own destiny."

"The winner's edge is not in a gifted birth, a high IQ, or in talent. The winner's edge is all mental."