Jacko former nanny and big sister Rebbie brawl over the children!

The former nanny for Michael Jackson‘s three children got into a brawl recently with Jackson’s sister during a heated dispute over how the children are being raised, The ENQUIRER has learned exclusively.

In the ugly incident, longtime nanny Grace Rwaramba came to blows with Michael’s 59-year-old sister Rebbie after an argument between the two women exploded out of control, say sources.

What started as a confrontation over the parenting skills of the singer’s mother Katherine – who has been named permanent guardian of his children – quickly turned violent. After heated words were exchanged, Rebbie punched Grace, starting a nasty donnybrook, according to a Jackson family insider.

Sources told The ENQUIRER the fight erupted last month at Katherine’s home in Encino, Calif., where Prince Michael, 12, Paris, 11, and 7-year-old Prince Michael II (nicknamed Blanket) have been living since their father’s June 25 death.

"Grace the nanny paid a visit to check on the children," disclosed the family insider.

"She had been fired by Michael a few weeks before his death, but she still loves the kids and is concerned about their welfare.

"The family had even considered re-hiring Grace to help with the transition in the aftermath of Michael’s death – but that’s now out the window after what happened between her and Rebbie.

"Grace went on a tirade about how the kids should be cared for. Grace questioned Katherine on what time the kids were going to bed and everything else.

"Katherine was trying to be civil, and said, ‘I’m the grandmother, and it was me who Michael appointed to raise them should something happen to him.’

"But Grace kept on being critical, and Rebbie became incensed with the way she was speaking to her mother.

"Rebbie finally had enough and smacked Grace, and Grace fought back and the two women came to blows!

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