Bobbi Kristina BLASTS Cissy Houston ...Don't Buy Her Bool !

Bobbi Kristina is on a mission to make sure grandma Cissy Houston's new tell-all book crashes and burns -- by BOYCOTTING it altogether and pleading with her fans to do the same.

Cissy released a book this week called "Remembering Whitney" -- which is all about Whitney Houston's life -- and made the rounds on a slew the talk shows promoting the hell out of it.

But Bobbi wasn't too happy, tweeting to her 119,000 plus followers, "Anything concerning my grandmother's book, I and @nickgordon of course personally have nothing to with."

She continues, "I haven't read and won't ... I find it to be disrespectful to my mother and me being her daughter won't tolerate it."

FYI -- Cissy was on Oprah earlier this week (again promoting the book) and admitted her relationship with BK was strained ... and admitted she knew that Bobbi didn't want the book written.

Unbelievable :
You know what's disrespectful Bobby Kristina?....talking back and being rude to your grandmama ...she's your mother's mother. I'm sorry, but it doesn't look right. I don't care if she's a miserable old crab apple....just take it and walk away. ALSO isn't you the one who's been drinking and doing drugs, wrecking cars, doing a reality show just months after Whitney's death and having a relationship with your adopted brother?.....Time to face the truth about Whitney....she was so far gone into substance abuse that she forgot to raise her daughter right. Grandmama Cissy is just trying to put her on the right path so she won't throw her life away like her mother Whitney....and her other two kids (Whitney's brothers) ...yes ALL of Cissy's kids have substance abuse issues...sad

Kristina, I beg to differ. You really need to see if you can get a free copy - read it and you'll see your past and future in one swoop. Disrespectful child.

How can you know the book is disrespectful if you hasn't even read it? I understand  you are still grieving but so is your grandmother (probably more than you). Maybe this book is away for Cissy to find some closure in her daughters death, and yes make money.

Oh damn....this girl has no respect for her grandmama dysfunctional family at best
How can you put something down if you haven't read one page of it? You have to be knowledgeable about a subject to rebutt it!