Demi Lovato celebrates her 27th birthday with the help of Ariana Grande

Happy Birthday Demi!

Demi Lovato and Ariana Grande

by Anna Sky Hulton |
Updated on

Today (20th August) is Demi Lovato's birthday, and she's ALREADY been celebrating in style! The 'Sorry Not Sorry' singer shared a short video on Instagram, of her celebrating with Ariana Grande, and some of her crew.

According to Demi, Ariana's manager Scooter Braun was meant to be filming the occasion, but forgot to turn the camera on! As such, Demi captioned her video, 'Okay, last one before bed. They literally filmed/sang happy birthday twice and @scooterbraun STILL forgot to press record 😂 @arianagrande’s face is everything and this video is a perfect glimpse of how f**king happy and rad my birthday is this year. So so happy. And I love my new family. Thank you guys, love you 🙏🏼🙌🏼'.

Scooter also shared the same video saying, 'Happy birthday to the amazing @ddlovato and I’m sorry for again missing you blow out the candles because I forgot to turn on my camera the entire song 🤦🏻‍♂️. But @arianagrande look at me made it all worth it 😂 happy birthday Demi!'

At the end of the video, Ariana makes a funny face as Scooter jokes he forgot to press record AGAIN! The moment was captured on Ariana's Instagram Story. 😂

Ariana Grande Instagram Story
Ariana Grande Instagram Story ©Ariana Grande Instagram Story © Instagram/arianagrande

Demi was in London last night to watch Ariana on tour, she posted a number of videos to her Instagram Stories showing clips from Ari's performance.

Meanwhile, Ariana Grande is continuing her 'Sweetener' tour, and will be performing in Birmingham, Glasgow and Sheffield next month, as well as two more dates in London in October. Tickets for her London shows are available from Aloud.com

Now take a look at celebrity transformations:

Gallery

Celebrity transformations slider with cover pic

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Swipe through to see the most amazing celebrity transformations of all time...

Little Mix2 of 33
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Little Mix, then

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!

Little Mix, now3 of 33
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Little Mix, now

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

Calvin Harris4 of 33
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Calvin Harris, then

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.

Calvin Harris5 of 33
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Calvin Harris, 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!

Cheryl, then6 of 33
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Cheryl, then

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

Cheryl, now7 of 33
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Cheryl, now

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

Justin Bieber8 of 33
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Justin Bieber, then

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

Justin Bieber, now9 of 33
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Justin Bieber, now

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.

Rihanna, then10 of 33
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Rihanna, then

A young Rihanna in 2005...

Rihanna, now11 of 33
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Rihanna, now

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

Matthew Lewis, then12 of 33
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Matthew Lewis, then

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 Lewis, now13 of 33
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Matthew Lewis, now

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, then14 of 33
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Miley Cyrus, then

Miley Cyrus in her Hannah Montana days...

Miley Cyrus, now15 of 33
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Miley Cyrus, now

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

Gareth Gates, then16 of 33
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Gareth Gates, then

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

Gareth Gates17 of 33
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Gareth Gates, now

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

Katy Perry, then18 of 33
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Katy Perry, then

Katy Perry rocking long black hair in 2004...

Katy Perry, now19 of 33
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Katy Perry, now

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

Chris Pratt, then20 of 33
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Chris Pratt, then

Jurassic Park actor Chris Pratt back in 2008...

Chris Pratt, now21 of 33
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Chris Pratt, now

Shed the pounds and now has a slimmer physique.

Kylie Jenner22 of 33
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Kylie Jenner, then

A fresh faced Kylie Jenner in 2008...

Kylie Jenner, now23 of 33
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Kylie Jenner, now

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

Zac Efron, then24 of 33
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Zac Efron, then

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

Zac Efron, now25 of 33
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Zac Efron

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

Justin Timberlake, then26 of 33
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Justin Timberlake, then

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

Justin Timberlake, now27 of 33
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Justin Timberlake, now

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

Johnny Vegas28 of 33
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Johnny Vegas, then

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

Johnny Vegas, now29 of 33
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Johnny Vegas, now

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

Jack Ryder, then30 of 33
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Jack Ryder, then

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

Jack Ryder, now31 of 33
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Jack Ryder, now

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

Jonathan Tapper, then32 of 33
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Jonathan Tapper, then

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.

Jonathan Tapper, now33 of 33
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Jonathan Tapper, now

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!

Demi Lovato, whose real name is Demetria Devonne Lovato, is known for her singles, 'Skyscraper', 'Sorry Not Sorry' and 'Sober'.

WATCH: 11 singers real names

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