It's not just celebrities - anyone with a phone, a camera or a pen-and-paper will eventually make a selfie.
Even, it turns out, astronauts.
A brilliant tweet by Astronaut Clay Anderson highlights one of the best self-portrait photos we've ever seen.
Talk about a "selfie!" This one, from 072307, is the ultimate for me! What do YOU think Twitterverse? http://t.co/Q7zTMR0kZv-- Clayton C. Anderson (@Astro_Clay) October 1, 2013
The picture was taken in 2007 when he was part of Expedition 15 to the International Space Station. It shows his shadow cast on the solar panels of the Soyuz spacecraft, as he stood in the restraints of Canadarm2.
And he's not the only one - it turns out space explorers have been making selfies for years. Universe Today has collected the best, but our favourite has to be this one by Neil Armstrong taken on the Moon: