Demi Lovato's Twitter selfie showed the "Really Don't Care" singer lounging by the pool Tuesday morning to take some relaxation as she revealed her half-naked body in a bikini.

Looking like she just emerged from the water, the 21-year-old singer showed her real beauty in a no make-up face, E! Online said in a report.

Demi Lovato's Twitter followers were treated in an up close photo of the singer who looked naturally beautiful showing her freckles from the nose up to the cheeks and the neck.

In another photo which she captioned "Summertime," the "Really Don't Care" singer Demi Lovato gave a glimpse of her half-naked body wearing a studded two-piece bikini. The photo bared her fit body, showing her right tattooed rib as her cleavage "almost burst out," OK! Magazine reported.

She paired her swimwear with gold bangles in her left hand.

The singer could credit her fit and toned body, as shown in Demi Lovato's Twitter photo, to her "newfound love" for fitness and healthy living, according to E! Online.

The Disney Channel star initially decided on Tuesday that she will not go to the gym because her "hot damn" ass was in sore. But after feeling a little weird of not going, Demi Lovato changed her mind as she post again another selfie.

Demi Lovato's Twitter photo in the gym showed that she was wearing a black sweater and paired it with a hot pink top while she listens to her headphone.

She tweeted, "Well, turns out I ended up in the gym."

"Getting fit is my new hobby and I love it!" the singer added.

E! Online reported that her change of lifestyle was made possible by a retreat she had attended last week.

The singer said in her Twitter account that her spiritual retreat made her experience full organic food, mediation, reike healing and working out.