Demi Lovato is to dedicate a unique gig to her die-hard fans.

The 'X Factor' USA judge has joined forces with 'The Voice' USA coach Cee Lo Green to launch a new live digital viewing experience, 2vLive, which will stream two of the pair's exclusive live concerts next month, and the brunette beauty is going to use her upcoming performance to pay tribute to her supporters.

Demi, whose fans are known as Lovatics, said: ''To all my Lovatics ... I am dedicating this exclusive concert to you all! Join in on the fun with 2vLive, for the full experience!''

The 'Bright Lights Bigger City' hitmaker added: ''2vLive is revolutionising the way fans can experience a concert, so I hope you join me on October 21 to see what it's all about.

''This is universal, so fans all over the world can buy tickets and become a part of the first, private 2vLive performance live from Toronto.''

Jennifer Dyer, President of 2vLive, is delighted to have got Cee Lo and Demi on board for the new project, which aims to enhance the experience of attending live concerts by allowing fans to view their favourite artists via mobiles, tablets or desktops in HD, and they can even choose where they sit tahnsk to the multi-camera options.

She said: ''Cee Lo and Demi have been great partners in producing these upcoming concerts and we are looking forward to kicking off our launch season line up with their performances.

''Their likeminded approach to the evolution of how fans connect with their favourite artists has made this a true relationship and an experience we know the fans are going to love!''

2vLive also allows fans to Tweet, Facebook and Instagram during the show direct from its platform to enable supporters to share real-time experiences without leaving the environment.

Fans can tune in for the first performance by Cee Lo at the Sound Academy in Toronto on October 21 and Demi will play at the Belasco Theater in Los Angeles on October 28.

Tickets to these live stream concerts are £4.99 and can be purchased directly at 2vLive (www.2vLive.com).