So sad — Paris Jackson is so worried about her little brother, Blanket.

The 19-year-old is reportedly concerned that her brother — 15-year-old Prince Michael “Blanket” Jackson — is basically living on his own without adult supervision or the specific guardian that her late father Michael Jackson had specifically requested in his will.

Michael’s mother Katherine Jackson was set to be Blanket’s legal guardian after his death, but according to TMZ, multiple sources close to the Jackson family claim that Paris’ aunt Rebbie Jackson is keeping the 86-year-old away from Blanket and the rest of the Jackson grandchildren — Paris, Blanket, and their older brother, 20-year-old "Prince" Michael Jackson, Jr. haven’t spoken to their grandmother in about three months.

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Paris allegedly claims that Aunt Rebbie, 66, — along with a few of her other aunts and uncles — are keeping Katherine isolated because they are trying to control her and the family’s fortune. Blanket has essentially been living alone in Katherine’s Calabasas home since January — because she was taken away to London for two months and she’s been staying with Rebbie in LA since she returned to the states.

Since Katherine hasn’t been home, sources say that uncle T.J. Jackson and his wife Frances Casey have been splitting guardianship duties with Blanket and they take turns staying with him at Katherine’s house — but Paris doesn’t think that’s enough for Blanket to feel like he’s part of a family.

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Even though Blanket hasn’t had adult supervision at home, the teen is still doing well. He’s reportedly excelling at school where he’s been getting straight A’s and he’s also become extremely social — which is a nice change, considering that he used to be extremely shy and introverted.

Paris and her siblings were shielded from the spotlight growing up since their father was very protective of them. But in the eight years since his death, they’ve opened up about their dad more in the media.

"I think that he would always be the supporting figure to me and my siblings,” Prince said in an interview with Good Morning America last month, “and support us in all the endeavors that we try."

Scroll through the gallery below to see more photos of Michael Jackson's kids through the years!