Watch Louisa Johnson nail 'Tears' on stage at Wembley Stadium

X Factor champ Louisa Johnson was serving powerful vocal realness at yesterday's Summertime Ball in London.

The singer showed off an amazing new look as she belted out Tears with Clean Bandit in front of thousands at Wembley Stadium.

It's Louisa's first single since her still-trying-to-forget-it-happened winner's song and three weeks after release the track is still a TUNE.

The song debuted at Number 6 in the charts before moving up to the Top 5 on Friday and is currently in the Top 3 of iTunes.

As well as her performance of Tears, Louisa also hit the stage alongside The Wanted's Nathan Sykes as the pair performed a special duet on his track Over And Over Again.

Meanwhile, talking to press backstage at the event, Louisa had her say on this year's 'new' X Factor judges.

Cheryl, Rita Ora and Nick Grimshaw are all gone from her series with Sharon Osbourne, Nicole Scherzinger and Louis Walsh replacing them alongside Simon Cowell.

"The new panel is great!" Louisa enthused.

She told the Daily Star on Sunday: "It's like the old gang is back together again."

The teenager, who was only 17 when she won The X Factor last year, added: "I'm sad in a way [that Rita left], but then she needed to go work on her music and everything else so it has all worked out okay."

Louisa is expected to drop her debut album in the autumn.

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