Sir Elton John has slammed Madonna, saying she resembles a "f***ing fairground stripper".
The Rocket Man hitmaker blasted the 53-year-old singer after claiming she was "horrible" to Lady Gaga — who is godmother to John and his husband David Furnish's 19-month-old son Zachary — and says the Turn Up the Radio singer has no right to criticise other artists because her "career is over" and her recent MDNA tour has been a flop.
Speaking on Australian news and current affairs programme Sunday Night, he said: "Why is she such a nightmare? Sorry, her career is over. Her tour has been a disaster and it couldn't happen to a bigger c***.
"If Madonna had any common sense she would have made a record like Ray of Light and stayed away from the dance stuff and just been a great pop singer and make great pop records, which she does brilliantly.
"But no, she had to go and prove ... she looks like a f***ing fairground stripper. She's been horrible to Gaga."
Madonna — who has sported a number of flash-flashing outfits throughout her tour — has criticised Gaga on a number of occasions and recently hit out at her after the 26-year-old pop star's single Born This Way had many similarities to her own 1989 hit Express Yourself.
She said: "I thought, 'What a wonderful way to redo my song.' I mean, I recognised the chord changes. I thought it was ... interesting."
Earlier this year, John reignited his long-running feud with Madonna by implying she wouldn't sing live at the Super Bowl half-time show, saying she should "lip-synch good" in her performance.
The 65-year-old musician's comments came after David had branded Madonna "embarrassing" and "desperate" after her song Masterpiece — from her directorial debut movie W.E. — beat John's efforts on animated film Gnomeo and Juliet to win a Golden Globe award.
He wrote on Facebook: "Madonna. Best song???? F**k off!!!
"Madonna winning Best Original Song truly shows how these awards have nothing to do with merit. Her acceptance speech was embarrassing in its narcissism. And her criticism of Gaga shows how desperate she really is. (sic)"