The singer is due to appear on this Wednesday's live results show, singing 'What the Hell' and 'Smile' from her album Goodbye Lullaby, Entertainment Weekly reports.
Lavigne recently revealed that she finds it "incredible" that her devoted fans get tattoos of her likeness, claiming that she finds such dedication to be flattering.
The 26-year-old announced last month that she has started working on a new pop-oriented album, stating that she already has eight songs for what will be her fifth record. Her fourth album Goodbye Lullaby was released in March of this year.
The singer is has reportedly been dating reality star Brody Jenner since February.
Lavigne's performance on America's Got Talent will air on Wednesday at 9pm on NBC.
> 'America's Got Talent': Vegas Week, Part 1 recap
> 'America's Got Talent': Vegas Week, Part 2 recap
Watch the music video for Avril Lavigne's 'What the Hell' below: