X Factor finalist Jahmene Douglas is preparing ahead of the live shows this weekend.
The 21-year-old from Swindon is expected to duet with his mentor Nicole Scherzinger this evening.
Around 10,000 fans will see the show each night with millions more watching at home.
ITV entertainment correspondent Caroline Whitmore caught up with some very excited fans.
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The RMT Union's comments come as it's announced a new operator will takeover the South West Trains franchise.
Monday's forecast for the west of the region
Monday's forecast for the east of the region