Jingle Bell Ball Transformations: 17 Amazing Before & After Photos Of Our 2016 Stars

1. Calvin Harris

Cal's been in the business quite a while now, and the 'My Way' DJ has definitely grown finer with age! He's ditched the geeky wardrobe for a very sophisticated red carpet look - bagging himself an Armani underwear modelling deal in the process. (Pics: Getty)

2. Little Mix

Our favourite pop princesses became the first and only group to win The X-Factor back in 2011. Fast-forward half a decade and they've ditched the butter-wouldn't-melt girlish look to become fierce, sassy queens! (Pics: Getty)

3. Nathan Sykes

Nathan's pretty much royalty when it comes to our Balls - performing at more JBBs than any other artist. While he's still as handsome as his days in The Wanted, his look and stle is definitely far more grown up in his solo career. (Pics: Getty)

4. Louisa Johnson

While she only became a world-famous pop sensation less than 12 months ago, Louisa's been a true performer for many years. She's gone from performing at care homes (pictured here in 2013) to packed out stadiums. Go Louisa! (Pics: Facebook/Getty)

5. Martin Garrix

Another star who proved that you don't need years of experience to become successful! Martin has been DJing in clubs since he was in his early-teens - and his audiences just keep getting bigger. His dress sense has matured with age, but that face remains as fresh as ever! (Pics: Facebook/Getty)

6. The Vamps

While there's no denying The Vamps boys have all grown up over the past 4 years, they're still as fresh-faced as ever - and STILL rocking on point outerwear... (Pics: Press/Getty)

7. Shawn Mendes

Thanks to Ellen Degeneres, Shawn Mendes was rapidly catapulted into the public eye. In just two years he's packed out arenas and topped charts worldwide. While he's still young, there's not been *that* much of a transformation... but we're expecting big things from the Canadian singer-songwriter for years to come, so who knows how his look will evolve? (Pics: Facebook/Getty)

8. Clean Bandit

They may have just reduced in numbers from 4 to 3, but the remaining members of Clean Bandit haven't changed that much in 6 years. Grace has a much more fierce red-carpet look, but Luke's stare remains the same! (Pics: Facebook/Getty)

9. Ellie Goulding

She's come a LONG way in the past 7 years! She's had more Big Top 40 number 1s than anyone else on our lineup, and her live shows never disappoint - so it's no surprise Ellie's a favourite at our Balls! She's always been a British style icon, and her evolution is amazing. Her fitness routine is obviously keeping her fresh, and has a wardrobe to die for. Even her stage presence has changed from her hugging a guitar to putting on show-stopping performances! (Pics: Getty)

10. DNCE

Okay, so *technically* DNCE haven't been around that long... But it's not the first band that Joe Jonas has fronted, so we're taking some artistic license (sue us!) with this transformation. After a decade in the spotlight, Joe Jonas has gone from the innocent and pretty boy singing alongside his brothers, to the rugged and hot AF man we see today. (Pics: Getty)

11. Craig David

These photos were taken 15 years apart... Let that sink in for a minute. As far as comebacks go, Craig was easily the biggest one of 2016. He's come back with a fresh new sound and a smokin' hot look. Gone are the days of pencil beards and beanie hats, in are the days of fresh suits and rippling muscles. (Pics: Getty)

12. Sigala

Sigala pretty much defined the sound of Summer 2016 with his house anthems, and he's changed a lot from his uni days... Bruce has ditched the shades and bow tie in favour of decks and a packed out stadium. Good life choice, if you ask us... (Pics: Starnow/Facebook)

13. Olly Murs

7 years ago, we were introduced to a cheeky Essex chappy called Olly. He didn't win The X-Factor, but as far as runner-up careers go, he's on of the biggest! He's come a long way form being papped carrying toilet roll home from the shops to selling out arenas around the world. We DO miss his trilby hats though... (Pics: Getty)

14. Years & Years

Olly, Emre & Mikey have produced some of the UK's most distinctive new music of late, and they've always had a unique style. In the past 2 years, Olly's had a haircut and jazzed up his wardrobe, Mikey's followed suit with some very loud shirts, and Emre's kept it a little more subtle with a new pair of specs. (Pics: Facebook/PA)

15. Jonas Blue

Back before he was known as Jonas Blue, the producer behind one of the freshest hits of summer 2016, he was DJ Guy Robin. Fast-forward 6 years and he's an internationally renowned DJ with a hot new look. (Pics: Facebook/Getty)

16. Dua Lipa

It's been 5 years since Dua Lipa shared this model-pose to Facebook... and now she's not just a model, she's a bonafide popstar! She's making her Jingle Bell Ball debut this year, and we're positive she's gonna be the one to watch on our red carpet! (Pics: Facebook/Getty)

17. James Arthur

While he's had a bit of a rollercoaster over the last few years, James Arthur made a big comeback in late-2016. Since his X-Factor victory in 2012, he's definitely grown up; with more rugged facial hair and an epic collection of tattoos. (Pics: Getty)