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!
Aubrey O'Day sure isn't shy! The singer displayed her toned tummy in a selfie snapshot on her Instagram, showing the results of her workout progress. "Sprouting my first ab . . . so f--king excited!" she captioned the shot, in which she wore a bright green trucker cap and a black bra top.