Celebs are the masters of self-promotion, and nothing says "look at me!" more than a selfie. Check out some memorable Hollywood selfies, courtesy of the likes of Nicki Minaj, Jenelle Evans, Justin Bieber, Rihanna, and, of course, a few Kardashians!
"Back at it," mom of two Kardashian posted along with this makeup-free snapshot taken in her gym in January 2014, six months after giving birth to daughter Penelope.
Credit: courtesy of Kourtney Kardashian