Does this mean bad blood?

Lana Del Rey teased a new song via Instagram on Wednesday — and seemingly shaded Taylor Swift in the process.

“Track 13 @jackantonoff,” the “Summertime Sadness” singer, 40, captioned a video of herself in the car as her music played.

Swifties were quick to point out that Del Rey dropped the tease the same day Swift, 35, revealed the cover art and release date for her forthcoming album “The Life of a Showgirl” — and used Swift’s lucky number, 13, while doing so.

“Lana sharing Track 13. Same day taylor swift announced her Album,” one X user pointed out . “Knowing 13 is taylor’s lucky number.”

Others honed in on the Antonoff tag, as Swift often works with the 41-year-old producer — but appears to not have done so for her 12th album.

Swift heavily hinted

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