I should start by considering where Avril Lavigne's official photos are hosted. Her official websites or social media pages probably have galleries. Sites like avril.com or her Facebook/Instagram might have curated collections. Also, maybe her discographies or tour pages have photo sections.

I should also mention that many photo collections might be outdated since Avril's music style evolved over the years. Suggest checking her most recent work as well. And for those who want a comprehensive collection, combining multiple sources might be necessary.

I should also suggest looking at official retailers for merchandise where product photos might be part of a collection, but that's a stretch. Music video stills from her videos could be another source. Platforms like IMDb or YouTube might have stills, but the quality might vary.