Britain's Got Talent semi-finals: Olly Murs, Alesha Dixon and more to perform

 Britain's Got Talent 2014 winner Collabro

The line up of guest stars for this year's Britain's Got Talent 2015 semi-finals has been confirmed.

Five performers have been announced for the week of live shows which start at the end of the month.

And kicking things off on the Monday is Ricky Martin.

On Tuesday and we'll see the return of last year's finalists Jack Pack as they prepare for the release of their debut album.

On Wednesday it'll be BGT judge Alesha Dixon herself as she takes to the stage, singing new track The Way We Are which is out on June 21.

On Thursday and new X Factor host Olly Murs will perform.

And on the Friday it'll be the turn for reigning champs Collabro to show this year's lot how its done wit a comeback performance from their new album Act Two.

ITV teased on the official website: "If you haven't already cleared your schedule for the TV extravaganza that is an ENTIRE WEEK of live shows for the BGT semi-finals, what the livin la vida loca are you waiting for?"

There will be more performers for the live final, the date of which is still yet to be confirmed.

> When do the Britain's Got Talent 2015 live shows start? Semi-finals begin May 25!

Right now, Britain's Got Talent continues with the latest auditions this Saturday night on ITV.

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