Dermot O'Leary presents the first of two programmes in which the judges invite the remaining 24 acts to their homes - in Barbados, Cannes, St Tropez and Ireland - to make their final selections. They're each joined by a celebrity expert - Cheryl has called on Girls Aloud bandmate Kimberley Walsh, for Simon it's Sinitta, Dannii is assisted by Emma Bunton and Louis has Westlife's Shane Filan. These are the eight the remaining hopefuls need to impress if they're to make it through to next week's live studio rounds.