Demi Lovato is feeling more confident than ever! The singer showed off her gorgeous, bikini-clad figure in a shot she shared with fans on both Instagram and Twitter.

"2014… feeling healthy, feeling rested.. Y'all ain't ready! #NEONLIGHTSTOUR" she captioned the photo, which shows the former 'X Factor' judge wearing a skimpy black bikini, relaxing in front of the water.

It's great to hear that Demi is feeling so great, as she has been outspoken about her struggles with an eating disorder and drug abuse in the past.

"I couldn’t go without 30 minutes to an hour without cocaine and I’d bring it on airplanes,” Demi revealed in an interview in December 2013. “I would smuggle it basically and just wait until everyone in first class went to sleep and I would just do it right there, or I’d sneak to the bathroom and I’d do it.”

The 21-year-old singer, who also struggled with bulimia, bipolar disorder, and self-harm, recently wrote a memoir, 'Staying Strong: 365 Days a Year,' about her health difficulties and time spent in treatment. She has since become a role model for people everywhere as she strives to make a difference in the world and encourage others to seek help if they're struggling with similar issues.

We're so happy that Demi seems to be doing so well!

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