TAYLOR Swift's new song Look What You Made Me Do uses the film Mean Girls to cleverly reference her beef with Katy Perry.
Katy once called Taylor "Regina George in sheep's clothing", referencing the high school film villain over no. 1 single Bad Blood, which was about their fall-out.
And now Taylor has taken ownership of the insult by directly sampling the song that underscores one of Regina's meanest moments in her comeback single.
F*** The Pain Away by Peaches is the soundtrack to the Halloween party that sees Regina smooch her ex-boyfriend Aaron Samuels in front of new girl Cady Heron, in full knowledge of the fact that Cady has a crush on him.
The scene is the catalyst for the plot to ruin Regina's life that drives the movie - and one film superfan couldn't miss the reference in Look What You Made Me Do.
Twitter user noticed the similarity on his first listen of Taylor's new hit, and checked it against the film immediately.
He tweeted: "Taylor was once called 'Regina George in sheep's clothing' and her new song uses the beat from this scene in Mean Girls. 👀"
The amazing discovery now has over 5,000 retweets and has been liked almost 12,000 times.
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T. Kyle even lined up the beats from the two songs and found that they look exactly the same - suggesting Taylor directly sampled the soundtrack in a subtle dig at her enemy.
Fans were really excited to see how Taylor had incorporated the insult into her song in such an interesting way.
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One tweeted: "I haven't always been the biggest fan of her music, but I love her self awareness as an artist.
"The best clap back is embracing your faults."
Meanwhile other fans were excited at the prospect of all the showbiz drama if the entire album turned out to be Taylor's personal "Burn Book".
In Mean Girls, the Burn Book was where Regina and her cronies wrote down horrible things about everyone in the school.
One fan joked: "One time, Taylor punched me in the face," referring to one character's recollection of her best interactions with school bully Regina.
Taylor's new album Reputation looks set to be all about what other people think of her, and the negative public image she has acquired in the last year.
Kim Kardashian and Kanye West put her on blast after she claimed to be offended by lyrics in his hit Famous - which she had already heard and approved.
While her ex Calvin Harris slammed her after her rep confirmed she had co-written his hit This Is What You Came For, despite their agreement to keep the collaboration under wraps.
Katy Perry addressed her feud with Taylor in her new single Swish Swish, which dropped the day before Look What You Made Me Do.
And the image of her "Regina George in sheep's clothing" tweet is now immortalised in the video, which sees Katy battle it out with rival basketball team "The Sheep".
The Sheep mascot is, you guessed it, a wolf in sheep's clothing, hinting at Taylor perhaps not being as nice as she'd like people to think she is.
While the video's storyline - Katy triumphing over her enemy team - is a not-so-subtle way of warning Taylor that she's coming for her crown.
Fans are now anticipating whether Taylor and Katy will clash at tonight's VMAs.
Taylor's video is set to premiere there, while Teenage Dream singer Katy is hosting the awards ceremony.
It will definitely be interesting to see whether the feud develops, or whether the pair are going to put their disagreements to bed after this dig.
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