Everything is clearly all good between Taylor Swift and Avril Lavigne.
A few days after Calvin Harris called out Lavigne because he believed Lavigne called out Swift on Twitter (she didn't), the artists came together on stage in San Diego.
On her latest "1989" tour stop, this time at PETCO Park, Swift surprised fans by bringing out Lavigne and singing a duet on the latter's 2002 hit "Complicated."
Tweeted Taylor after adding to her concert guest collection:
“So incredible sharing the stage with @AvrilLavigne! ‘Complicated’ is such a brilliant pop song and I just love her."
Avril then responded herself with the following:
"Such a Pleasure to perform ‘Complicated’ tonight with @taylorswift on her #1989 world tour! She ROCKS."