If you never heard of what selfie is here is a little definition :
A selfie is a type of self-portrait photograph, typically taken with a hand-held digital camera or camera phone. Selfies are often associated with social networking. They are often casual, are typically taken either with a camera held at arm’s length or in a mirror, and typically include either only the photographer or the photographer and as many people as can be in focus. (from Wikipedia)
Nowadays, you can’t avoid selfies pictures, they are everywhere on social media. They are mainly used to share good moments with friends on Facebook, Twitter or Instagram for example. They are ones more original than others. Even Barack Obama took a selfie of himself with other politics people during Mandela’s homage ceremony. The last most popular selfie is the one taken at the Oscar Ceremony with a lot of cinema celebrities : Brad Pitt, Angelina Jolie, Bradley Cooper, Ellen Degeneres, Julia Roberts and others. This selfie is the most retweeted photo ever, more than 3.3 million times.