Katy Perry Explains Why Divorce Is In 'Part Of Me'

'If I can help someone else out ... and they're inspired to keep moving forward, then I've done my job,' Perry tells MTV News.

By Kara Warner
















Katy Perry in the "Katy Perry: Part of Me 3D" trailer



Photo: Paramount

Thora Birch Tila Tequila Tina Fey Tricia Helfer