Hayley Williams Brings Out Her Sister to Perform "Ain't It Fun" at Leeds Festival 2014

Hayley Williams brought our her sister Erica on stage during Paramore's headlining set at Leeds Festival 2014.

The vocalist's sibling joined the band during their set closer, "Ain't It Fun."



Hayley said earlier during Paramore's set: "Today has been a great day. I got to meet an idol - Brody Dalle and watch Jimmy Eat World with my sister, who has come to England for the first time."