Just don't get on her bad side.Taylor Swift has released a brand new music video on Monday for the latest single "Blank Space" off her fifth studio album "1989" in which she turns into a psycho ex-girlfriend.

Directed by Joseph Kahn, the visual opens with Swift eating her breakfast in bed, while holding a white kitten and surrounded by white horses. Once her love interest arrives home, the couple enjoys their life together - riding bicycles in the living room, going on a picnic and eating Sweethearts candies.

However, the "Shake It Off" singer becomes furious when she catches her boyfriend texting another woman. "Who is she? I get drunk on jealousy," she sings.

After revealing "I'm a nightmare dressed as a daydream," Swift becomes a vicious, vengeful ex who throws her lover's iPhone into a fountain, cuts off his clothes, swings a golf club to his fancy car, stabs a heart-shaped cake full of blood, poisons his apple and destroys the portrait she painted of him.

"Got a long list of ex-lovers / They'll tell you I'm insane / But I got a blank space baby / And I'll write your name," she croons, seemingly poking fun at her real-life image, following a handful of her highly publicized breakups.

The video first appeared on Vimeo in the morning and was quickly removed. Kahn took to his Twitter account to blame Yahoo! of releasing the clip ahead of its schedule:

Swift then tweeted the leaked video hours later, and it was put back on Vimeo:

Check out the music video for Taylor Swift's "Blank Space" below: