The tour continues in Nashville tonight
"You don't have to follow the rules or keep it as sterile as the record label or whatever the rollout plan may be"
Phoebe Bridgers, Garbage, Questlove and Halsey have already registered their protests
Rodrigo said Lavigne "broke down so many barriers and opened so many doors for girls like me"
The pair performed an acoustic rendition of the 'Teenage Dream' track
The band say they've been "belting out" Rodrigo's tunes
The Grammy winner's tour stretches across North America, the UK and Europe this year
The pop star was one of the big winners of the event in Las Vegas
The annual awards show is being held in Las Vegas after being postponed due to the COVID-19 pandemic
The pop star is up for seven awards at the 2022 awards show