[Denver]

Britain's Got Talent has unveiled its guest performers for the live semi-finals and final, and it seems the ITV reality show has bagged some pretty big names.

Most excitingly, Little Mix and previous winners Diversity are set to team up for a "special performance" during the final next Sunday, June 4.

Stephen Mulhern unveiled the line-up on tonight's (May 27) Britain's Got More Talent, the first live episode of the series.

Throughout the semi-finals over the next week, there are set to be a raft of performers starting with Alfie Boe and Vera Lynn (as a hologram – yes, really) on Monday (May 29).

Throughout the week, they will be followed by ex-Fifth Harmony member Camila Cabello, the cast of the Bat Out of Hell musical and former X Factor contestants 5 After Midnight, who will perform their debut single.

Also returning is last year's Britain's Got Talent champion Richard Jones, who will no doubt be showing off some top magic.