This year, the selfie officially transitioned from a broadly mocked tool of "millennial narcissists" into a communication device that could convey powerful messages of its own.
In 2015, you could take a selfie just for the damn fun of it. (See: the Kardashians on Instagram.) But selfies also created a powerful platform to give us a glimpse into space, to hear from others about trans rights, feminism, body empowerment and much much more.
Below, some of 2015's most memorable selfies.
1. The Kim, Kanye, and Hillary selfie.
2. The sorority girl baseball game selfies that were heavily mocked on national television.
3. The perfectly timed Google Street View selfie.
Nasr Bitar from Ontario, Canada, spotted the Google Street View car in his neighborhood and quickly figured out the driving patterns the car was taking. He later found his image on Google Maps and posted it to Instagram, creating this (the first??) selfie inside a screenshot inside an Instagram photo.
4. The unfortunate "spilling a drink on Coolio" selfie.
5. The bald eagle selfie.
6. The selfie that this girl's grandparents framed.
7. The "My Wife Is Giving Birth Right Now" selfie.
8. The fitspo-shattering selfie.
9. The Kanye at the Super Bowl selfie.
10. Ramadan selfies.
11. The Curiosity rover's epic selfies from MARS.
12. The selfie series from this trans man documenting his changing appearance during three years of testosterone treatment.
13. The divorce selfie trend.
14. These time-lapse selfies by a guy who took a photo of himself every day for eight years (from age 12 to age 20).
15. The Sam Smith breakup selfie.
16. The space station selfie.
17. The viral selfies of women with half of their makeup on.
It all started when YouTube star NikkieTutorials posted a video highlighting the “power of makeup," which showed her with putting on full glam makeup — but only on the right half of her face. Soon, hundreds of people were uploading half-makeup selfies using the hashtag #ThePowerOfMakeup along with comments such as “Because when someone asks who I’m trying to look good for, my answer is always ‘myself.’"