JK Rowling has confused her Twitter followers by tweeting her own username.

The Harry Potter author tweeted '@jk_rowling' at her 6.67m followers on Friday.

Her tweet caused confusion and delight amongst her followers, with many wondering if she was trying to emulate Ed Ball's on Twitter.

In 2011 Ed Balls, who recently appear on the Great Sports Relief Bake Off, accidentally tweeted his own name to his Twitter followers.

The famous tweet received over 38,000 retweets and resulted in April 28, the day it was sent, becoming the semi-official Ed Balls day.

However, Ms Rowling has admitted that she sent the tweet accidentally after trying to tweet @jennycolgan.