Taylor Swift has officially become a billionaire, according to Forbes, but Swifties aren’t going to stop watching her closely now her bank balance has spilled over. The music star joined the list of new billionaires, which Forbes have claimed has been an ‘amazing year for rich people’ but not for many others. The celebrity is one of the 265 newcomers to feature in the big list this year, with the 34-year-old having an estimated $1.1 billion fortune after her record-breaking Eras Tour, concert film, and she’ll likely add to her bank balance with her new album coming out in a number of weeks, Th…