Trick or treat.

Lily Allen made another savage dig at her estranged husband, David Harbour, by dressing up as the mistress she named in her song “Madeline” for Halloween 2025 .

On Friday, the “Smile” singer took to TikTok to share a video of herself dressed as Madeline from the beloved children’s book series.

In a clip set to the tune of Cardi B’s “Magnet,” Allen — who was dressed in a blue collared pea coat with a red neckerchief, a straw hat, Mary Jane shoes and a bright orange wig — pranced down a hallway while looking directly at the camera.

At one point, the British singer, 40, took a hit of her neon green vape before turning around and dancing back up the hallway.

“Who IS Madeline though, actually?” she captioned the post.

Fans took to Allen’s TikTok comments section to sha

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