Can they work it out on the remix?

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The “Brat” hitmaker, 32, raised eyebrows last week after she accessorized with attitude by wearing a silk sash that read “Miss Should Be Headliner” over her white minidress.

The move instantly stirred up controversy on social media, with many Green Day fans hitting out at the British “Apple” songstress for her tongue-in-cheek accessory.

On Sunday, drummer Tré Cool took to social media to respond to the “365” singer, accessorizing with a sash made from toilet paper, that read “Actual Headliner.”

It seems as there were no hard feelings, though, as Charli — whose real name is Charlotte Aitchison — responded to the veteran punk-rockers behind classics such as “When I Come Around,” “Good Riddance (Time of Your Life”) and “Boulevard of Broken Dreams.”

“Obsessed,” the “Club Classics” hitmaker, who boasts 3 Grammy wins and 10 nominations, wrote on X. (Green Day has 4 Grammy wins and 19 nominations.)

What’s more, Green Day frontman Billie Joe Armstrong, 53, closed their headlining show with a “Brat” hat in honor of the singer, who performed on the mainstage at the festival on both weekends.

While Charli XCX’s weekend one performance, which also featured “Talk Talk” collaborator Troye Sivan, preceded Green Day’s on the main stage, rapper Travis Scott actually followed the band in the coveted closing slot.

Other headliners included Lady Gaga and Post Malone, as well as performances by Missy Elliott, Megan Thee Stallion, Benson Boone, Zedd and Shaboozey.

While Charli XCX first stepped on the scene in 2013 with the release of her debut album “True Romance,” her real breakout moment was in 2024 after her “Brat” LP becoming a pop-cultural movement.

In November, she even hosted “Saturday Night Live” and shouted out a New York Post article involving Martha Stewart.

And in February, the “360” singer won her first three Grammys for her new music, including Best Dance/Electronic Album and Best Dance Pop Recording for “Von dutch.”