joined hosts Nikki and Brie Garcia on their podcast and detailed the evolution of her song "A Thousand Years," from The Twilight Saga soundtrack smash to a popular wedding song to a beloved lullaby.

Twihard Christina Perri did not expect her Twilight ballad "A Thousand Years" to live on for years ... Production said], 'We need a song for the wedding scene,' and I was like, 'Okay, great.' ...