Taylor Swift's empire tops $2 billion as wedding frenzy fuels global obsession

Taylor Swift's biggest wedding gift may already be sitting in her bank account.

Before the superstar prepared to say "I do," she built an estimated $2 billion empire that branding experts said transformed her from a hitmaker into one of the most powerful businesses in entertainment.

"At this point, Taylor Swift's brand is so dominant and so deeply tied to her creative output that marriage is only going to add a new dimension to an empire that is already running on all cylinders," reputation...