Demi Lovato said she is “a new person with a new life” after her Rock in Rio performance on Sunday night.

The 'Sober' hitmaker sang her candid and emotional latest single at the show in Lisbon, Portugal over the weekend, and shared a clip with fans following the concert, which saw her voice crack as she got a lyric about wanting to be a "role model".

She tweeted alongside it: "Tonight I took the stage, a new person with a new life. Thank you to everyone who has supported me throughout this journey. It will never be forgotten."