IT WILL be the biggest performance of their lives on television’s biggest talent show.

Even a last-minute injury blow has not stopped Southampton’s determined dancing stars notching up hours of training to boost their cha-cha-chances in the Britain’s Got Talent final.

From 60,000 hopefuls, Kai Widdrington and Natalia Jeved have made it to the final 11 acts, and have vowed to make Southampton proud tonight.

But only your votes can make their dreams come true and see them crowned winners.

After endless hours of rehearsals, |perfecting their final routine, the teenagers from Bassett were struck down by injury fears on Wednesday when 15-year-old Natalia woke up with a swollen calf, leaving her unable to walk.

But the duo have trained through the pain and promised to wow judges and viewers with a |quick-footed routine, unlike anything seen before.

Russian-born Natalia, who moved from her home in Cyprus to live and train with Kai, said: “It has been very |worrying but I have been given injections to numb the pain.

“It has made training tougher for us but won’t hamper our performance.

“The routine is only 90 seconds long and I will hold it together for that. This is a once-in-a-|lifetime chance, nothing will get in our way.”

Since their semi-final performance on Monday night, the pair have been busy with their final routine but took time out to meet their fans from Kai’s former schools, St Swithun Wells Catholic Primary School, in Chandler’s Ford, and Toynbee School.

Amazing Kai, 16, said: “The support has been amazing and we want to thank everybody who has given us this chance to show the world what we can do. We won’t let you down.

“We have been rehearsing every day to ensure we are ready for the show. We will have something different that people have never seen before.

“Winning would be a dream come true.