A memoir by Madonna’s brother claims the singer is a self-absorbed woman who thinks she is “the center of the universe.”

“I hope that it is Kabbalah’s lesson that she is not the center of the universe,” Christopher Ciccone writes in his 342-page book Life With My Sister Madonna, scheduled for release next Tuesday.

Christopher, forty-seven, once worked closely with his superstar sis, even designing and directing her 1993 Girlie Show Tour and servingg as director of her 1991 documentary Madonna: Truth or Dare.