Lovato has spoken openly about her body acceptance struggles, especially her insecurity about her legs.
"Stretch marks and extra fat.and yet I still love myself", Lovato labeled the video along with two pink heart emojis.
The Disney favourite - who is set to kick off the United Kingdom leg of her world tour in Belfast in June - previously made headlines after she announced she was six years sober.
"The boomerang smoothed out my legs".
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The 25-year-old also shared a message that read, "I have cellulite just like the other 93% of women do".
Demi recently took to Instagram to divulge her problem with "thigh gap", stretch marks and cellulite, a trend setting up among dieters for years.
She wrote a longer message on her story, explaining that "what you see on Instagram isn't always what it seems to be". Fans of Lovato know that she has constantly been an advocate for body positivity. Lets embrace our real selves. The "Sorry Not Sorry" singer also posted a full-length selfie that showed her touching thighs. Some days I feel great and some days I don't feel great.
In case you missed it, the Sorry Not Sorry singer's opening act snuck out on the Prudential Center stage and planted a kiss on the chart topper on Monday night - before getting a lap dance from Demi! Giving up my eating disorder has been the most challenging journey of my life but I work every day towards solid recovery even if I mess up sometimes.