Rocco Ritchie brands Madonna a ‘son of a b***h’ on Instagram

For the past four months, Madonna and Guy Ritchie have fought over the custody of their son Rocco, who is refusing to live in New York with his mother.

And Madonna has apparently been left devastated after a social media account set up by her son has branded her a "bitch."

The Instagram account in the name of Rocco Ritchie, puts the description as a "son of a bitch" in the bio.

Although the IG’s name, image and biography are public, all of the uploaded pictures shared are private, prompting speculation that it is not a fake account and it does belong to Rocco.

The profile pic on the page changed three times last week, and all appeared to be selfie-style close-ups of the 15-year-old's face.