PICTURES! Tonight's latest Britain's Got Talent 2013 semi-final line up

Here's a rundown of the nine acts on tonight's fourth Britain's Got Talent 2013 semi-final line up.

The auditions have only just finished but the live shows continue off this evening with the first semi-final heat.

Throughout this week there will be five live shows, with nine acts competing in each.

The judges - Simon Cowell, Amanda Holden, Alesha Dixon and David Walliams - will of course be on hand to offer their opinions, but it'll be us viewers who will vote for our favourite.

The act with the highest number of public votes automatically goes through to the live grand final while the two runner-up acts will then face the judges who will pick their favourite to go through to the live shows.

And a one wild card act will make it into the final from the third placed finishers from all of the semi-finals.

This evening will see dancers AJ and Chloe, singer Alex Keirl and impressionist Francine Lewis all competing for a spot in the final.

They'll be up against 14-year-old singer Asanda, variety vocal group the Clubtown Freaks and dancer Poppin' Ron.

All girl dance group The Shockarellas will also be in the line up, alongside the cast of musical Chasing The Dream and illusionist James More.

Britain's Got Talent 2013 airs tonight, live on ITV from 7:30PM.

Browse pictures of this evening's BGT semi-final line up below...

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