Demi Lovato stunned young students at an elementary school in Utah on Monday when she turned up for a surprise gig.
The Disney sensation was billed only as a "special guest" who would be performing at Oak Hollow Elementary School in Draper, Utah after an eight-year-old student won a radio contest.
The children were delighted when Lovato stepped onstage - and the teen sensation was thrilled by her reception.
In a post on her Twitter.com page after the gig, she wrote, "Just shut down Oak Hollow elementary school... WHAATT?!! Hahahaha."
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