CHER ROCKED BY BIPOLAR BOMB!

Daughter-in-law drops legal dime on shattered diva

CRUMBLING Cher is suffering manic depressive episodes, according to insiders who insist her brutal legal war over son Elijah Blue Allman has plunged her into a tragic downward spiral that's destroying her health and her life.

Sources close to the struggling 77-year-old songbird confirm she's trapped in a living hell as she fights to save her 47-year-old son from drugs while also locking horns with his wife, Marieangela "Queenie" King, who told a judge Cher suffers from bipolar disorder.

In a bombshell filing challenging Cher's bid to have Elijah placed in a conservatorship, the 36-year-old claimed her estranged mom-in-law has admitted being a "manic depressive" and is not capable of managing her own affairs, let alone her son's.