article_snippet.sent: Singer Katy Perry is the world's top Tweeter and boasts 68m followers - five million ahead of the world's next most popular Twitter personality, Justin Bieber who has 62m.
article_snippet.sent: Top tweets: Singer Katy Perry is the world's most followed person on Twitter, closely followed by Justin Bieber .
article_snippet.sent: Pop favourite Taylor Swift has 56m followers while fellow singer Lady Gaga has 45.8m and Justin Timberlake has 44.4m.
highlights_snippet.sent: Top celebrities include Katy Perry, Justin Bieber and Taylor Swift .
  