Rihanna is channeling her inner stripper in videos and on Instagram. Britney Spears is whipping women on leashes. Nicki Minaj is braless and spilling out of her revealing jacket on Ellen. Scarlett Johansson's in her undies on the cover of Esquire. Gaga's got a thong on. And Miley Cyrus? Well, she has taught us that each and every day could bring a new tongue or twerk Twitpic from her.