The feisty pop diva headbutted her brother as a family baptism descended into a huge bust-up, according to reports.

Stone arrived late and refused to read out the church order of service properly. A source told the Daily Mirror that when her brother, Daniel Skillin, quizzed her about it, "she was absolutely furious and they had a full-blown argument."

The source added: "They were screaming at each other and the next thing, Joss headbutted him. Other family members ran over to break it up and she stormed off. It turned from a nice family affair into a brawl between Joss and her brother. No one could believe it."