Who said "Be yourself, everyone else is taken."?

This quote is attributed to Billie Eilish.

Be yourself, everyone else is taken. - Billie Eilish

"Be yourself, everyone else is taken."

Billie Eilish

Alternative Pop Singer American Born 2001 (age 25)

"Somebody tell me how to feel about things and I promise you I'll respond."

"I'm just a bad guy doing bad things."

"You say I'm stubborn and I say you're just lazy."

"Be your own anchor."