Demi Lovato is seen leaving the hotel in Barcelona on June 21, 2018.

Demi Lovato seen posing for “Sober” photoshoots.

Demi Lovato poses for her new campaign, CORE Hydration’s ‘Finding Balance With Demi Lovato’ shoots and video. Hero_15_0604_h264 from Core Hydration on Vimeo.

Demi Lovato is seen performing during her tour, “Tell Me You Love Me Tour” in Newcastle on June 15, 2018.

Demi Lovato is seen performing during her tour, “Tell Me You Love Me Tour” in Manchester Arena, Manchester, UK – June 16, 2018.

Demi Lovato is seen performing during her tour, “Tell Me You Love Me Tour” in SSE Hydro, Glasgow on June 13, 2018.

Demi Lovato is seen performing at Newmark Racecourse in Suffolk on June 9, 2018.

Demi Lovato is seen leaving Zenith at the end of his concert in Paris on June 4, 2018.

Demi Lovato is seen leaving her hotel in Paris in France on June 4, 2018.

Demi Lovato is seen arriving at Paris Charles de Gaulle Airport on June 3, 2018.

Demi Lovato is seen performing at the BBC The Biggest Weekend Festival in Singleton Park in Swansea, UK on May 26, 2018.

Demi Lovato is seen performing live at the 3 Arena in Dublin, Ireland on May 25, 2018.

Finally the official video of Christina Aguilera’s ft Demi Lovato’s Fall in line music video has premiere! Love the chemistry and the storyboard of the duo! Enjoy the video!

Enjoy the powerful duet performance of the century! Christina Aguilera and Demi Lovato finally embarked their debut duet during the 2018 Billboard Awards for their new song, Fall In Line…

Demi Lovato and Christina Aguilera are seen performing and during the audience/backstage at the 2018 Billboard Music Awards in Las Vegas on May 20, 2018. PERFORMANCE BACKSTAGE & AUDIENCE

Demi Lovato arrives at Billboard Music Awards in Las Vegas on May 20, 2018. Expect more updates from the event later!

Demi Lovato is seen visiting Fabletics at the The Village at Westfield Topanga on May 18, 2018.

Pre-order Christina Aguilera’s new album ‘Liberation’ available June 15 and instantly get the new songs “Fall In Line” feat. Demi Lovato, “Twice” and “Accelerate” feat. Ty Dolla $ign and 2 Chainz!…

Demi Lovato poses photoshoots for her newest engagement with DIFF Eyewear promotion.

It’s a dream come true for Demi Lovato — the singer is set to perform with her idol Christina Aguilera at the Billboard Music Awards later this month, PEOPLE confirms…