Soldato
Man, people are dumb - surely anyone would be able to figure out that Rebecca must have been a finalist or something on X-Factor, which finished just recently? Either absolutely nobody you know had any interest in the show, in which case you need more friends, or you're so detached from them that you somehow missed the fatuous chatter that always surrounds such an event, or you're pretending ignorance in a laughable attempt to seem aloof and above mainstream drivel. I've not watched a single episode of any of these cash-cow shows for years, and the context still made it really obvious who stopper was talking about.
No people aren't dumb, they are just uninterested in that sort of thing.
I had no idea who Rebecca was as well ... things like X-Factor are not a topic of conversation between me and my friends or at work. the only thing I know about the show was that there was a contestant called Wagner who my friend Paul kept on moaning about still being in the show on Facebook. Given the number of these sort of competition shows which seem to be on most of the time there was nothing to indicate that this person was particularly from X-Factor.

