The clip features Lisa wearing a printed bikini top and shows off her delicate upper frame.
For the most part, the comments on the post are positive, but one user wrote, “You’re so skinny, this is not good for you…”
The singer seemed to take the criticism in her stride though, following up by posting a full-length snap just hours later.
Just last month Lisa and her twin sister, Jessica hit back at the negative comments they regularly receive about their bodies on social media, confessing to The Daily Telegraph that the pair are sick of defending their weight to others.
“We have been getting it for such a long time. You get tired of it,” the Untouched singer said.
Jessica confirmed this sentiment, admitting, “We are comfortable in our bodies, we know how healthy we are.”
The pair were also forced to face up to online trolls earlier this year after sharing the cover art for their single, In My Blood.
“Omg! EAT SOMETHING FOR CRYING OUT LOUD!!!!! I’ll pay for the food,” one fan commented on the post, in which the siblings were pictured completely naked and covered in glitter paint.
Jess and Lisa responded by sending the Instagram user a list of groceries and writing, “Here’s our daily shopping/eating list for 1 day; let us know where you’ll be sending it.”