Lily Allen made sure to hit below the belt in her latest jab at estranged husband David Harbour.

The singer gave out butt plugs as party favors at the launch party for new her record, “West End Girl,” per The London Standard .

Guests reportedly left the bash last Friday with the blue and white polka dot sex toy — a direct reference to her scathing lyrics in the song “P—y Palace” off the album, which details Harbour’s alleged cheating.

Some guests seemed to hint on social media that the sex toys are actually USBs with her album on them resembling butt plugs, reps for Allen weren’t immediately available to confirm if they are real or not.

In the new song, Allen, 40, laments, “Sex toys, butt plugs, lube inside / Hundreds of Trojans, you’re so f—ing broken / How’d I get caught up in y

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