Jessie J has pulled out of Robin Thicke's tour to concentrate on recording.

The 'Price Tag' singer confirmed that she will no longer be supporting the R&B artist in North America in an effort to focus on recording an American version of her second studio album 'Alive' in an attempt to break the US.

The star was due to head out on the road in support of the 'Blurred Lines' man in February and March, but she took to Twitter today (10.01.14) to reveal her cancellation.

Jessie wrote: ''I'm off to the USA to dedicate my time to my heartbeats who have had less of my time than anywhere in the world in the past few years.

''No gigs, no music released! So I am going into the studio to write and finish the US version of 'Alive' and hopefully do some small shows and prove to my fans how much I want to be there! Not everything is in my control!

''But I am making it my goal that my album is released in the USA this year!''

The 25-year-old singer said her management team decided it was best to prioritise time in the studio and promotion to finish the record.

She continued: ''Out of respect to my USA fans I want to be honest. Timing isn't always perfect but I want to make it work! And hopefully have my own shows in the USA someday! I hope you understand. I'm sorry to all the fans who were coming.

''I will make it up by making sure you have more of me and my music this year.''