Justin Bieber is now one of the most-followed people on Twitter, having hit the 80 million mark yesterday.

He's just behind Katy Perry, who has a whopping 87.7 million followers, and has overtaken Taylor Swift, who's at 76.3 million. In fact, at time of writing he's already at 80.5 million.

As for his biggest re-tweet? That came in January 2014, when he was going through his 'bad boy' phase and was arrested for DUI and other driving-related offences. That tweet alone has been re-tweeted over 618,000 times.