Louisa Johnson makes the most of her incredible figure as she rocks the stage at Key 103 Live in a glitzy leotard

PUBLISHED: 23:51, 16 July 2016 | UPDATED: 11:45, 17 July 2016

She first appeared on our radars last Christmas, and became The X Factor's youngest ever winner.

But now Louisa Johnson can certainly hold her own onstage as she proved on Saturday night when she belted out her hits at the Key 103 Live concert in Manchester.

The 18-year-old blonde looked incredible as she performed at the Manchester Arena in a revealing glitzy leotard.

All grown up: Louisa Johnson, 18, proved she's matured from her X Factor days and can hold her own onstage, as she belted out her hits at the Key 103 Live concert in Manchester on Saturday

The X Factor winner took to the stage in glitzy bodysuit which, despite its long sleeves and high neck, left little to the imagination.

The one-piece, which rose high up her thigh, perfectly skimmed her pert derriere and cheekily revealing one of the singer's usually obscured tattoos.

The white bodysuit was covered in hundreds of silver sequins which were organised into various panels and shapes, forming a funky geometric design on the outfit's front that gleamed under the stage lights.

A band of sequins wrapped around Louisa's tiny waist, enhancing her enviably flat stomach and petite frame.

A sparkly affair: The white bodysuit was covered in hundreds of silver sequins organised into various panels and shapes, forming a funky geometric design on the front that gleamed onstage

Legs for days: The one-piece, which rose high up her thigh, perfectly skimmed her pert derriere and put her seemingly endless legs on display

The singer teased a little bit of skin up top, with the body featuring laced up cut-outs along the sleeves.

However the focus remained on her seemingly endless legs which were fully displayed, covered only by a pair of knee-high fitted suede heeled boots, which served to lengthen her slender pins even more.

The Essex-born beauty swept her hair back into a loose, wavy ponytail, keeping her hair off her face as she strutted around the stage and danced for the excited crowd.

During the performance, which included Top 10 UK single Tears, the young singer's passion for her music was evident to see in her facial expressions.

No Tears here: Louisa looked elated during her performance as she belted out 'Tears', her debut collaboration with Clean Bandit which reached number 5 in the UK Top 40

Loving every minute: the young singer's passion for her music was evident for all to see

Success story: Louisa and her powerful voice came onto the scene when she won The X Factor last year at just 17 years old, making her the show's youngest ever winner

The event, hosted by Coronation Street's Brooke Vincent with Mike Toolin, also featured a TS5 DJ set by man-of-the-moment Craig David.

Winning The X Factor last Christmas under pop starlet Rita Ora's mentorship, Louisa became the youngest winner of the show ever, claiming the record deal prize at just 17.

Six months on, Louisa's career is picking up speed, with the teen's debut 'Tears', a collaboration with Clean Bandit, reaching number 5 in the charts .

Speaking to The Mirror about her progressing career, Louisa said: 'Everything has happened at full speed, it's hard to get my head around it.

'I can't believe I'm actually here. I've busy recording my stuff, it's going good.

'The album isn't quite there just yet, but it's a bit edgy and different. And it's not covers. It's all new.'

The only way is up: Just six months after her X Factor win Louisa's career is picking up speed, having revealed recently that she is recording music that is 'a bit edgy and different'

Teamwork: Louisa poses in more dressed-down look with Clean Bandit (pictured), her first musical collaborators

After the energetic set, Louisa opted for a more casual but classic combo of ripped jeans paired with a black satin bomber jacket and caged grey suede heels, as she posed for photos with her 'Tears' collaborators Clean Bandit.

The singer is hoping the collusion with the band will be a kicking off point for her own solo career, following the group's hugely successful collaboration with Jess Glynne on their Grammy-winning single Rather Be.

'The guys are so high up and well-respected, so to start my career with a song like that is really cool and I feel really fortunate to be in that position,' she told the Evening Standard last week.

Keeping it casual: Louisa opted for a more casual but classic combo of ripped jeans paired with a black satin bomber jacket and caged grey suede heels as she posed for photos after her energetic set

'My music is coming along really well': Louisa revealed that her bosses at record label Syco have been hugely supportive of the single, but that her anticipated album is her focus and will be 'different' to what people expect

Also in attendance: Coronation Street actress Brooke Vincent was on the red carpet before presenting

Leggy display;: She arrived wearing a yellow minidress with a shirt over the top

Louisa added that her bosses at Simon Cowell's record label Syco are hugely supportive of the move: 'Syco were really pushing me to do this song. They were excited for me too. My own music is coming along really well. It's a lot different to what people may expect,' she explained.

The singer flaunted a golden tan onstage, which is likely to be from her recent idyllic holiday to the Bahamas with boyfriend Daniel Elliott, 20, who she has recently moved in with.

The pair are reported to be 'very happy' together, having even revealed that they even have matching tattoos on their pinky fingers as symbol of their union, while on their romantic getaway.

Louisa was dating long-term boyfriend Ellis Stevens during the audition stages of the X Factor, but they split before the live shows started. It is believed that she got together with Daniel shortly afterwards.