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!
Who's that girl? Lady Gaga startled fans by going makeup free in a revealing selfie that she shared on her official fan site. The "Applause" singer narrowly missed a wardrobe malfunction when the white top she wore in the snapshot slipped off her shoulder.