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Britney Spears reportedly continues to struggle with her relationship with her younger sister, Jamie Lynn Spears.

Now, a source close to the star claims she feels "totally abandoned" by Jamie Lynn, 30!

"She feels like Jamie Lynn totally abandoned her and let her down in the fight of her life.

"She asked for support, and feels like Jamie Lynn turned her back on her and couldn't be bothered," the source added.

JAMIE LYNN SPEARS TO RELEASE BOOK: 'STRONG CONVICTION TO SHARE MY STORY'.

Brtiney Spears is repotedly feeling abandoned by her sister.

News of the continued rift between the two sisters comes after Jamie Lynn announced that she’s planning to release a tell-all book titled "Things I Should Have Said" that will allegedly address things like her sister’s conservatorship as well as her daughter’s near-fatal ATV accident in 2017.

BRITNEY SPEARS SAYS SHE'S WRITING A BOOK ABOUT A GIRL'S GHOST 'STUCK IN LIMBO BECAUSE OF TRAUMA AND PAIN'.

Jamie Lynn Spears (right) has spoken out in support of her sister following the release of the documentary 'Framin Britney Spears' and a court ruling to keep their father Jamie as co-conservator over Britney's estate.