Demi Lovato has a crush on One Direction's Niall Horan

Niall Horan
The 18-year-old singer - who has previously dated Wilmer Valderrama and Joe Jonas - admits the blonde Irish singer in the boy band is her favorite member.

Asked in a web-chat who her celebrity crush is she named Niall and said: "He's so adorable."

Blonde Niall has previously revealed he thinks Demi "seems to be a nice girl".

Meanwhile, Harry Styles - who sings in the band alongside Niall, Zayn Malik, Louis Tomlinson and Liam Payne - has revealed he is terrified of losing his infamous curly locks.

He told The Sun newspaper: "I am a little concerned I might go bald soon. It worries me it might fall out. I am just watching how much I put on it now."

Simon Cowell, who put the boy band together on the UK version of 'The X Factor', has previously claimed he is so excited about One Direction's success he is unable to sleep.

Louis revealed: "He's really, really excited about the reaction we've had out here and has said he's not sleeping ­properly because he keeps thinking about us and how it's going. He's far too excited to sleep. Which is quite cool."