BRITNEY HITS ROCK BOTTOM!

Fears she has nothing left to live for after K-Fed's scorching tell-all

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Being painted as a "demonic, deadbeat mom" has left Spears in a dark place, an insider says

TRAINWRECK Britney Spears is at rock bottom after ex-hubby Kevin Federline ripped her to shreds in a bombshell memoir — and sources say loved ones are terrified she'll decide to end it all.

“There are real worries building that Britney is feeling like she has precious little if nothing left to live for and she could try to take her own life,” reveals one worried insider. “Kevin’s book is just the latest in a long list of setbacks and disasters she’s had to contend with, but the growing worry is this is the one that could push her over the edge.”

His memoir, titled You Thought You Knew, is a brutal takedown of the former pop princess. In it, former dancer Kevin, 47, paints the strung-out songbird, 43, as a deadbeat mom who snorted cocaine while pregnant and cheated on him during their marriage, including a steamy fling with a female dancer.

In another bombshell claim, Kevin — who’s the dad of Britney's two sons, Sean Preston, 20, and Jayden James, 19 — said the youngsters sometimes woke at night to find her standing quietly in the doorway with a knife in her hand.