14 Side-By-Sides Of Pop Divas In 2007 And 2017 That Are Pretty Surprising

A lot can change in a decade.

1. Demi Lovato

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Then: Demi was just beginning to become a household name ten years ago thanks to her role in Camp Rock.

Now: After she branched out from the show, Demi became a singer in her own right, releasing five successful albums. She scored a recurring role on the show Glee, served as a judge on The X Factor USA and this year released a documentary detailing her alcohol and drug addictions, charting her sobriety and return to music.

2. Taylor Swift

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Then: Back in 2007, Taylor's career was still in its infancy. She was enjoying the success of her eponymous first album while recording her second.

Now: Over the course of ten years, Taylor has established herself as one of the world's most successful popstars. She's shifted over 40 million albums, making her one of the best-selling artists of all time and has been widely critically acclaimed too, receiving 10 Grammys. In 2017 she released her sixth record-breaking album, Reputation, and is gearing up for a worldwide stadium tour in 2018.

3. Rihanna

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Then: In 2007 Rihanna was enjoying one of the most successful years of her career after the release of Good Girl Gone Bad which spawned the smash-hit "Umbrella." In the UK alone, the track stayed at number one for 10 consecutive weeks – the longest run at number one for any single of that decade.

Now: Since then, Rihanna has released an impressive five albums selling 200 million copies and starred in six movies including Ocean's 8, due for release next year. On top of all that, she's become a beauty and fashion mogul with her respective collections selling out worldwide.

4. Beyoncé

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Then: It's hard to believe now, but back in 2007 Beyoncé's solo career was only just beginning. She had released her second solo album, B-Day, and was about to embark on her first worldwide concert tour.

Now: Since then, Beyoncé has become an iconic performer, releasing four albums which have sold 100 million copies. In between this success, marrying Jay Z and having three children, Beyoncé has also appeared in five movies, collaborated with Topshop on activewear brand Ivy Park, and is set to voice Nala in the remake of The Lion King next year.

5. Christina Aguilera

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Then: Following the success of her first four studio albums, including the record-breaking Stripped, Christina took time out between 2007 and 2010 to have her son, Max.

Now: Christina returned with a bang in 2010 with the release of her fifth album, Bionic, and also starred alongside Cher in the movie Burlesque. Since then she's appeared as a judge on The Voice, released a sixth album and welcomed a daughter, Summer, into the world.

6. Miley Cyrus

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Then: In 2007, Miley was beginning to break away from her Hannah Montana image by signing a deal to distribute her own music. That year she released Hannah Montana 2: Meet Miley Cyrus – a double-disc album, with the first sung by Hannah Montana, and the second being Miley's debut album.

Now: Miley has undergone many transformations over the past ten years as she established herself as a solo act. She's released five albums with the most recent, Younger Now, a return to her country roots. She currently appears as a judge on The Voice, and has also continued acting, appearing in nine films since 2007.

7. Katy Perry

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Then: 2007 was the year Katy Perry signed her record deal and began working with producers on her first album.

Now: The following year, Katy released her debut album which birthed the hits, "I Kissed A Girl" and "Hot N Cold." She's gone on to release three further albums, voice characters in The Smurfs movies as well as star in her own feature-length documentary which charted her 2012 world tour. This year she was announced as a judge on the revamped American Idol, due in 2018.

8. Ariana Grande

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Then: In 2007, Ariana was rising the ranks of Broadway, but was actually harbouring the desire to make an R&B album.

Now: Shortly afterwards, Ariana bagged a role in Nickelodeon's Victorious which then led to a record deal. Since then, she's released three solo albums, made a cameo in Zoolander 2, appeared in a TV broadcast of Hairspray: Live, and this year completed the world tour for her third album. This tour became the subject of a global news story in May after a terrorist attack at her concert in Manchester killed 22 people. Ariana responded by organising a benefit concert for the victims and raised over £2 million.

9. Selena Gomez

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Then: 2007 was the year Selena's career began after scoring the role of Alex Russo in Wizards of Waverley Place.

Now: Wizards of Waverley Place ran from 2007 until 2012 and in that time Selena formed a band which released three studio albums. After the show ended she embarked on a solo career, releasing two successful albums. Selena has recently opened up about her experience with Lupus, which led to her undergoing a kidney transplant this year.

10. Kelly Clarkson

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Then: Kelly Clarkson had established a wildly successful career after winning American Idol in 2002, and by 2007 had released three albums.

Now: Since then, she's released five further albums, sold 25 million records worldwide, racked up 100 Billboard number ones, given birth to two children and is currently serving as a judge on The Voice.

11. Mariah Carey

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Then: By 2007, Mariah had enjoyed a phenomenally successful solo career with ten albums and the record for the longest-running US number one single in history with "One Sweet Day."

Now: Since 2007, Mariah has released a further four albums, completed a Las Vegas residency, appeared in eight films, set up her own record label and given birth to twins.

12. Britney Spears

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Then: By 2007 Britney had established herself as a pop icon, with her first three albums breaking records across the world. In the UK, her debut single "...Baby One More Time" became the fastest-selling single ever by a female artist, and her first album is now the best-selling debut release of any artist in history.

Now: Britney's mental health issues between 2007 and 2010 are well documented, but throughout that time she still released two albums. Since then, she's put out a further three records, appeared as a judge on The X Factor USA, and is coming to the end of a four year Las Vegas residency.

13. Jennifer Lopez

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Then: By 2007, Jennifer Lopez had established herself and her alter-ego, J-Lo as a successful singer and actress, appearing in 23 movies and releasing four albums.

Now: Since then, she's released four more albums and appeared in eight further movies. Jennifer has also served as a judge on American Idol, broken into TV acting and producing, given birth to twins and, in 2016, began a Vegas residency.

14. Adele

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Then: Adele was just beginning to emerge as music's most interesting new artist in 2007, having released her breakthrough single, "Hometown Glory."

Now: Four years later, Adele's second album, 21, made her a global household name and broke records across the globe. But it was its follow up, 25, which sent her fame stratospheric. It became the fastest-selling album in UK chart history, and in the US sold 3.38 million copies in its first week – the highest first week sales since records began. She then embarked on a global world tour and picked up the Grammy for Album of the Year. Oh and let's also not forget that she also has a casual Golden Globe Award and an Oscar for her song, "Skyfall," from the James Bond film of the same name.