Former Disney starlet and X Factor USA presenter Demi Lovato has shared a teaser trailer for her upcoming new album and single.

The single, entitled 'Heart Attack', is due to be released on March 4 and in this brief video clip the songstress can be seen posing against an all-white background, with a voice over declaring"

"For a while I could tell that when people would talk to me they knew my story. I think I've opened up more on this album. My life began to evolve and I started to grow."

"These are songs about the celebration of life and how rewarding it can be. This is what this album is about."

Following the uploading of this exciting preview, the hashtag '#LovaticsAreHavingAHeartAttack' made the Top 10 worldwide trending topics list on social networking site Twitter with fans of the beauty showing their excitement at the news.

Watch the preview below: