It's National Selfie Day, a holiday celebrated by millennials just about every day. The photo taken of oneself is a stunning, efficient innovation in modern portraiture, which without a doubt, has changed the world. In honor of this sacred day, here are the top 13 selfies that have advanced the art form to new heights.

1. The Ellen Oscars Superselfie

When selfies were still a relative novelty, host Ellen DeGeneres assembled a supergroup at the 2014 Academy Awards to create the Avengers/Justice League of selfies. Featuring such celebrities as Jennifer Lawrence, Meryl Streep, and Lupita Nyong'o's brother, it became the most retweeted tweet of all time within a few hours.