Rihanna has proved she really is a good girl gone bad, after photographs showing the R+B singer in an intimate embrace with a female friend surfaced online. The Umbrella hitmaker, 19, was snapped fondling her pal's breasts on a recent night out while her friend poses provocatively for the camera. The photo - posted on MediaTakeOut.com - will come as a shock to her young fans, for the Bajan beauty is known for her clean-cut image.