The former couple performed the Sum 41 anthem together during Lavigne’s headlining set at the Vans Warped Tour in D.C.
The festival's founder, Kevin Lyman, talks about revitalizing the 30-year-old punk rock road show and why $149 is the right price for today’s fans.
Warped Tour staples Simple Plan, Bowling for Soup, Pennywise, and Miss May I lead the lineup.
Each stop on the 30th-anniversary return will showcase 70 to 100 bands, founder Kevin Lyman announced Thursday.
