Bestselling novel The Fault in Our Stars [1] has become a huge fan favorite of readers everywhere, and tonight on POPSUGAR Now, we sit down with the leads in the film adaptation to talk about why the story has become such a sensation. Plus, we talk to Mad Men [2] star Jon Hamm [3] about his new movie role, and we've got your Summer TV preview.

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Source: 20th Century Fox [4]