The former US X Factor judge has been adopting a healthier lifestyle as of late and has even taken up a new hobby in the process.
"Had a spiritual retreat last week full of organic food, working out, meditation and reiki healing," Demi wrote on Twitter. "I feel so ready for this summer!!!"
'Skyscraper' singer Demi gave fans a peak of her sunkissed bikini body as she rocked an embellished black two-piece while sunbathing in the sunshine.
The 21-year-old later showed off her natural beauty and freckled complexion with a make-up free selfie.
Captioning the photo, she simply said: "Freckles."
Just last night (17 June), Demi admitted: "Today's the first day I haven't worked out in a week.... I feel weird ... but hot damn my ass is sore!!!"
It seems the songstress has caught the fitness bug though, as just hours later she ended up in the gym!
She confessed to fans: "Well, turns out I ended up in the gym.. Getting fit is my new hobby and I love it!!"
Demi, who was joined on stage by Ed Sheeran at the Hollywood Bowl this week, will be heading back over to the UK in November.
It was announced earlier this month that Demi will be joining Enrique Iglesias on his UK headline tour for four arena dates across the country!
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Watch Demi's video for 'Neon Lights' below: