KELLY'S PAYING TERRIBLE TOLL FOR WEIGHT LOSS

Mind seems fuzzy after losing 60 lbs. with diet drug

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CRUMBLING Kelly Clarkson is acting erratic onstage and off — and sources snitch to GLOBE the songbird’s obsession with dieting is shoving her closer to total collapse!

Scary footage from Kelly’s recent concert in Atlantic City shows the 42-year-old American Idol struggling to hold it together — and sources say her “wobbly state of mind” was clear as day!

“Sure, she lost the weight, but everyone’s worried she’s going overboard,” snipes a snitch. “She hasn’t been herself at all lately. She’s shaky on stage, she’s jittery, her moods are all over the place — and she looks gaunt because her cheeks are sunken in. It’s not good!”