Shayne Ward shows off three and a half stone weight loss in topless snap and he looks HOT

Perrie Edwards, Leigh-Anne Pinnock, Jesy Nelson and Jade Thirlwall looked very young in 2011 after winning The X Factor. To be fair, they were all teenagers at the time!

Now the biggest girl band on the planet, the girls look fantastic!

Scottish DJ Calvin Harris pictured here in 2009. Sorry Calvin, but we're not sure that look would be Acceptable In The 80s - OR now.

The 'One Kiss' hit-maker transformed into an A-list hunk, and has dated the likes of Taylor Swift and Rita Ora. Twit twoo!

Girls Aloud singer Cheryl was just a fresh-faced teenager when she auditioned for Popstars: The Rivals in 2002.

She's now an on-trend and super-glamorous mum-of-one, even walking the red carpet at a London Fashion Week show.

Little Justin Bieber was just a Baby when he burst onto the scene in 2009...

These days, he's of course grown up - but he looks pretty much the same! Apart from the fact that he no longer has the signature Bieber hairstyle, of course.

A young Rihanna in 2005...

The still cheeky Fenty grin is still there, and Rihanna continues to defy the aging process.

Harry Potter star Matthew Lewis starred in the film series as Neville Longbottom from 2001 to the last film in 2011, here pictured in 2004 at the Harry Potter and the Prisoner of Azkaban premiere.

Matthew grew up into such a good-looking chap that the makeup department on the Potter films had to try and make him less attractive in the later films, even spawning the phrase 'Longbottomed'.

Miley Cyrus in her Hannah Montana days...

She may have gone through various transformations, but Miley is still recognisable.

Pop Idol contestant Gareth Gates on the show back in 2001...

Here in 2017, he showing off his muscular physique alongside his girlfriend Faye Brookes.

Katy Perry rocking long black hair in 2004...

And showing off her shorter, blonde pixie cut in 2017.

Jurassic Park actor Chris Pratt back in 2008...

Shed the pounds and now has a slimmer physique.

A fresh faced Kylie Jenner in 2008...

Now rocking a platinum blonde 'do at the age of 21 in November 2018.

Zac Efron in his High School Musical days back in 2007...

10 years later, he was looking incredibly dapper at the Australian premiere for The Greatest Showman in 2017 - even sporting a 'tache.

JT rocking his epic tight curls with frosted tips back in 2000...

He's so much more grown-up in September 2018 whilst performing in Las Vegas.

TV personality Johnny Vegas, real name Michael Pennington, is well known for his larger frame.

But in 2018, he revealed that he'd lost two stone.

Jack Ryder, AKA Jamie Mitchell from EastEnders, was a noughties heartthrob if ever there was one.

In 2018, Jack was announced to be joining Holby City - and look at him now!

Gogglebox's Jonathan Tapper was 21st 3lbs at his heaviest whilst appearing on the show with his family - wife Nikki, daughter Amy and son Josh.

But with the help of a diet plan, Jonathan was able to lose a whopping three stone in just 12 weeks, and six inches off his waist!