Los Angeles - Harry Styles has been named the "most fickle" celebrity tweeter.
According to data collated and analysed by a social media company on behalf of www.FickleTattoos.com, the One Direction hunk is the least engaging celebrity on Twitter as he averages one reply per 333 333 tweets he receives.
Dragons' Den star Peter Jones has been named the most engaging celebrity tweeter with an average of one reply per 141 tweets sent to him, while Professor Green has one per 800.
'Celebrities are a fickle bunch'
What's more, the data revealed the average celebrity with more than 500 000 Twitter followers sends a self-promotional tweet once in every 10 tweets.
David Wain-Heapy of FickleTattoos.com said: "Celebrities are a fickle bunch - with one in every 10 tweets begging followers to support their career moves or latest projects, yet only engaging once in a blue moon.
"We undertook this research to expose the most and least fickle amongst them, deciphering who actually rewards their following by interacting and engaging, and therefore being the most 'stable' in terms of social media investments."