The real life Lucy from the hit Beatles’ song “Lucy in the Sky with Diamonds” has died.

Lucy O’Donnell Vodden, 46, passed away after a long fight against lupus — a chronic illness during which the immune system attacks the body’s own tissue — at St. Thomas’ Hospital in London on Sunday.

Vodden came to the attention of John Lennon when the Beatles’ young son Julian came home from nursey school one day in 1966 with a drawing of his classmate Lucy O’Donnell that he said was “Lucy in the sky with diamonds.”

The track became a psychedelic masterpiece long associated with LSD use.

Julian — who reached out to his childhood friend in recent years — says he is “shocked and saddened” by the death of the woman who inspired the rock classic.