LONDON:

Christopher Ciccone plans to release a tell-all memoir about his superstar sibling Madonna and it will reportedly be published without the pop diva’s permission. The 47-year-old Ciccone is penning it with infamous celebrity biographer Wendy Leigh, who has written intimate biographies on Liza Minnelli and Grace Kelly. To be published by Simon-Schuster, the book is due to be released next month, reports contactmusic.com.

According to reports, the book is “Ciccone’s extraordinary memoir based on his life and 47 years of growing up with and working with his sister — the most famous woman in the world.”

However, the book is allegedly set to be released without Madonna’s consent.

Liz Rosenberg, Madonna’s publicist, stated, “Madonna has not cooperated with any biography about herself.”

Madonna’s relationship with her younger brother is said to have become strained in recent years, even though the pair worked together intimately in the early 1990s, with Ciccone serving as artistic director on the star’s 1991 documentary In Bed With Madonna, and designing and directing her Girlie Show tour in 1993.