Katy Perry has overtaken Justin Bieber as the most followed person on Twitter.
The latest figures show the US singer has 46,534,966 followers compared to the Canadian teen star's 46,510,838.
Shea Bennett from the All Twitter news blog said Perry was now likely to be the first to get to 50 million.
She said: "Bieber has been quite active on his profile as he's on tour in Brazil, but Perry hasn't tweeted since October, so expect a little more action once she gets back on the train."
Justin Bieber took Twitter's top spot from Lady Gaga in January.
The Canadian star passed the 40 million Twitter follower mark in June.
Earlier this year a report suggested that around 50% of Bieber's followers could be fake.
Socialbakers spots fake accounts by looking at the number of followers and seeing if genuine tweets have been posted, rather than spam.
Shea Bennett added: "If history has taught us anything about number one placement on Twitter, it's that once you've been leap-frogged by another user you never get it back again."
According to monitoring website twittercounter.com, Lady Gaga, Barack Obama and Taylor Swift are in spots three, four and five on Twitter's most followed list.
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