The former couple performed the Sum 41 anthem together during Lavigne’s headlining set at the Vans Warped Tour in D.C.

Singer-songwriter Kathleen Edwards tweeted, "I just became an Avril Lavigne fan." The protester also had several statements written on her back, arms and chest including, "Stop logging old growth ...

Avril Lavigne confronted an environmental protester ... Written on the protester’s back, arms and chest were various statements such as “Stop logging old growth now,” “Save the Greenbelt ...

Avril Lavigne had choice words for a topless protester ... "stop logging old growth now" and "land back" written on her arms and back. At first, the Canada native ignored the woman and continued ...

It’s not complicated: Avril Lavigne remains one of fashion ... The iconic image features Lavigne posing with her arms folded, with her hip angled slightly to the right amid the frenzied ...

Drake partied like it was 2003 when he linked up with Avril Lavigne and Fefe Dobson ... He wrapped his arms around Dobson and Lavigne, both of whom were dressed in all-black outfits.

Avril Lavigne brought all the nostalgia with her ... her walking onto a crosswalk and turning to face the camera with arms crossed in the same pose as the original picture. As in the old picture ...

Avril Lavigne isn't losing grip on Tyga during this ... At the time, Tyga kissed Avril as she wrapped her arms around his neck. The pair were also seen holding hands at the event.

For her appearance on Machine Gun Kelly's Mainstream Sellout Tour, Avril Lavigne continues to pave the way for the current pop-punk revival with her trademark style. MORE: Avril Lavigne rocks ...

Avril Lavigne and Tyga are keeping the flames of ... Inside the party, the musicians were spotted with their arms around each other as they mingled with other guests. At the time, ET had learned ...

Avril Lavigne and Tyga are displaying some PDA ... In one pic from the event, Tyga kisses Avril on the lips, as she stands with her arms around his neck. Another shot shows the duo happily ...