Taylor Swift is joining The Voice USA as a “mega mentor”.

The Shake It Off singer, 29, will be advising contestants on the upcoming 17th series of the hit singing competition.

The news was announced by The Voice coaches John Legend and Blake Shelton, who posted a video on Instagram showing them discussing who the new star mentor might be.

As they chatted, Swift stepped out of a nearby trailer.

The singer was previously a mentor during the seventh series of the programme.

The new series of The Voice starts in the US later this month.