Sir Tom JonesFans of The Voice are in for a treat later on tonight… when Jessie J locks horns with Sir Tom Jones! 

The pair clash twice during the show, first when Tom riles Jessie, 25, with his surprise decision to axe one of his singers and later when two of Jessie’s acts perform Katy Perry’s ‘Alien’.

Tom, 72,  enrages her by saying: ‘They are very similar in the way they sing.’

Well, it’s not exactly the worst insult we’ve heard, but it was enough to wind her up!

Tune in tonight at 8.35pm, BBC1, to see it all kick off.