Dance music superstar David Guetta is still fighting over the division of assets with his ex-wife Cathy, four months after their divorce was finalised.

The couple's 24-year marriage was officially declared over in a Paris, France court in March (14), but it appears the pair has yet to reach an agreement over how to split its shared business interests.

A source tells the New York Post's Page Six column, "Cathy owns all of the business names, and the music (rights), (including) their 'F**k Me I'm Famous' brand (of dance parties and popular compilation albums).

"Even though (their divorce) is finalized, things are not good."

The report suggests Guetta will lose half of his $30 million (£17.65 million) fortune to his ex as she was key in helping him establish himself as a top producer/Dj over the years.

Another insider adds, "He's the rock star, but she's the business mogul."