PRISCILLA'S FEARS FOR GRANDDAUGHTER

Terrified Lisa Marie's Harper is rushing toward a teen wedding!

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Twins Finley and Harper with dad Michael Lockwood

PRISCILLA PRESLEY is all shook up over fears her teen granddaughter Harper is growing pitting her up too fast against Harper's dad, Michael Lockwood, family sources snitch to The National ENQUIRER.

The brewing Presley family war comes after 17-year-old Harper's boyfriend gifted her with a glittery promise ring at Christmas, prompting Priscilla to panic the present may be a prelude to a teen wedding! "Things are tense right now," says our spy. "Michael has always taken a hands-off approach with Harper and her twin sister, Finley, while Priscilla has long pushed him to provide more guidance and structure.