What is the fine-grained topic of the following text: Well, it looks like Biel knows the world is on to her and the prince or princess of nostalgia — hey, Timberlake's from *Nsync and she's from 7th Heaven, don't deny that the prince/ss of nostalgia cometh — she's got brewin'. Only return the topic.
Jessica Biel and Justin Timberlake's relationship and their roots in nostalgia-inducing popular culture.