Video: Britney In Miley's Documentary

Britney appears in the new preview for Miley Cyrus’ MTV documentary “The Movement.”

In it, Miley tells Britney she just wants to go on stage at the VMAs and have a blast.

“Everyone takes the VMAs so seriously and I just wanna come out and like shoot a hot dog gun… I just wanna have fun.”

Britney @ :55.