33 Pics Charting Demi Lovato's Transformation Through The Years

1. 1992: Demetria Devonne Lovato was born on 20th August

Picture: Twitter

2. 1999: As a seven year-old the singer soon joined the cast of Barney And Friends! #LEDGE

3. 2008: Demi struck up a close bond with Selena Gomez after they both appeared on the show together

4. 2007: Demi quickly became a Disney hit and got her big screen break in 2007 with the film Camp Rock

2008

5. 2008: Demi wowing on the red carpet of the European premiere for the movie Camp Rock in London

6. 2009: Demi shows off her specs appeal as she joins the Jonas Brothers for their 3D concert movie

7. 2009: Demi also showed support to friend Miley Cyrus at the Hannah Montana premiere

2009

8. 2009: Demi appearing with the Joe Jonas for the Good Morning America Summer Concert Series

9. 2010: Demi stuns on the red carpet of Vanity Fair's Oscars Viewing Party

10. 2010: Demi hitting the stage with former boyfriend Joe Jonas back in the day

11. 2010: Demi and Taio Cruz announcing the nominations for the American Music Awards together

12. 2011: Demi singing her heart out at the Do Something Awards

13. 2011: Demi getting to hang out with popular rap star Tyler, The Creator at the MTV VMAs

14. 2011: Demi shows off her patriotic side singing the national anthem before a MLB World Series match

15. 2011: Demi wins Favourite TV Guest Star for her role in Grey's Anatomy at the People's Choice Awards

16. 2011: Demi heading to London to celebrate the launch of her album 'Unbroken'

17. 2012: Demi served on the panel of The X Factor USA with Simon Cowell, Britney Spears and Paula Abdul

18. 2012: Demi is no stranger to awards - here she is holding up one at the MTV VMAs 2012

19. 2013: Demi playing the Teen Choice Awards after winning the Choice Female Artist prize

20. 2013: Demi made a HUGE hit with her single 'Made In The USA' taking the charts by storm

21. 2013: Demi returned to the judging panel of The X Factor USA for her second stint on the panel

22. 2013: Demi rocked some blue locks at Glamour Magazine's 15th Anniversary party! #NeonLights

Picture: Getty

23. 2014: Demi performing live on her 'Neon Lights' tour out in Vancouver

Picture: Getty

24. 2014: Demi's fans - called Lovatics - are still as commited as ever. #Selfie

Picture: Splash

25. 2014: Demi showing off her elegant side at the Cosmopolitan Latinas Awards

Picture: Getty

26. 2014: Demi treated us to an incredible performance at The Teen Choice Awards

Picture: PA

27. 2014: Demi looks pretty in floral for her appearance on Good Morning America

Picture: Getty

28. 2015: Demi and her pop BFF Nick Jonas set up their OWN record label to find fresh music talent

Picture: Getty

29. 2015: Demi got to join her boyfriend on the set of TV show From Dusk Til Dawn as a guest star

Picture: Instagram

30. 2015: This year saw Demi ditch the neon hair and go all Bad Sandy from Grease on us!

Picture: Instagram

31. 2015: This year saw Demi get a new BFF... in the form of rap star Iggy Azalea!

32. 2015: The year Demi launched her new 'Cool For The Summer' era... with a WHOLE new outlook!

Picture: Michael Buckner/Getty Images

33. 2015: Demi took the sass level up to 11 with the video for her new hit 'Cool For The Summer'