Fans accuse Demi Lovato of ripping off Katy Perry & Jessie J in 'Cool for the Summer'

Demi Lovato Sexy Cool For The Summer Video Teaser

Does Demi Lovato's new single sound uncomfortably similar to Katy Perry's "I Kissed a Girl" and Jessie's J's "Domino"?

This is what plenty of people are saying about Demi's "Cool for the Summer," which leaked online Tuesday. While the sultry tune is undeniably catchy, the breathy vocals on the verse are giving some people major Katy vibes circa 2008. The subject matter -- a naughty fling with another woman with suggestive lyrics like, "It's okay/I'mma little curious too/Tell me if it's wrong/If it's right/I don't care ... Got a taste for the cherry/I just need to take a bite" -- further fuel the comparisons.

As Demi sings, "Take me down into your paradise," it also undeniably sounds a lot like when Jessie J sings, "Rock my world until the sunlight" in "Domino."

WATCH: Demi Lovato Covers Up 'Vagina' Tattoo, Shows Off Slim Figure

Naturally, it didn't take long for the Internet to react.

Meanwhile, Demi, 22, is paying no attention to her haters, Instagramming this photo of her and her 35-year-old boyfriend, former That '70s Show star Wilmer Valderrama, on Tuesday.

"My love... Always supporting me on set... At 4 am even if he has to get up to work at 8," she wrote next to this pic of the two cuddling.

WATCH: Demi Lovato Says Her Gynecologist Asked for an Autograph During Her Exam

Watch the video below to see Demi gushing about Wilmer, who she says she "wouldn't be alive" today without.

Demi Lovato Praises Wilmer Valderrama:  'I Wouldn't Be Alive Without Him'
Read Full Story

Sign up for Entertainment Insider by AOL to get the hottest pop culture news delivered straight to your inbox!

Subscribe to our other newsletters

Emails may offer personalized content or ads. Learn more. You may unsubscribe any time.