shows off her pearly whites as she poses with super fan Greg
backstage at her Nashville concert last week.JJJ
writes to us, saying, "I recently went to Demi Lovato
's concert in Nashville. Me and my best friend got the VIP package which included going to her sound check, floor seats and even meeting her! Demi
was soooo nice and a really Down to Earth person! Taylor Swift
and Kevin Jonas Sr.
were also at