Tuning up her pipes for a big night, Demi Lovato took part in a rehearsal for Sunday's (June 16) MuchMusic Video Awards in Toronto, Canada.

Sporting a polka-dot dress under a denim jacket, the "Give Your Heart a Break" songstress belted out a few tunes to get herself pumped for the big festivities.

She's gearing up for her return to the "X Factor" judges panel, and now Demi Lovato scored the cover spot on Bliss magazine's July 2013 issue.

After rocking a few adorable poses for the front page spread, the "Heart Attack" songstress dished about being done with partying and steering clear from drugs and alcohol.

Proving she's not just a pretty face, Demi Lovato released footage from her time in the studio performing the song, "In Case."

Sharing about her new self-titled album, the 20-year-old songstress said of her songwriting, "I wrote about personal experiences and became more candid about them. I also feel like my lyrics were more vulnerable, and I’m just really proud of how honest I was in this album.”