I'm clueless come to think of it. Miley Cyrus, Cheryl Cole, Rihanna, Beyonce etc... I don't really know anything about any them, or even what they look like. As far as I'm concerned they might as well be the same person.
I don't follow trends or know what's 'hot' or talked about among my generation anymore. Not sure I ever have. But everyone else I know seems to have sound knowledge of this sort of thing, even people I wouldn't suspect. It's not a big deal, but it might be if someone makes a Cheryl Cole joke and I don't get it.