Following the album release, a costume designer named Natalie Tippett has come forward claiming she had an affair with David Harbour - and there's lots of clues that seem to confirm that she is in fact Madeline. Here's everything you need to know.

The alleged woman David Harbour cheated on Lily Allen with has come forward and identified herself as Natalie Tippett. Here’s everything we know about her. If you’re not clued up on all the drama, the singer dropped a new album on Friday containing a song called Madeline in which she appeared to sing about her ex-husband’s other woman.

David Harbour's 'Mistress' Revealed: The 'Stranger Things' Star 'Cheated' on Singer Wife Lily Allen and Inspired Her Revenge Track 'Madeline' After 'Fling' With Costume Designer Natalie Tippett David Harbour's alleged mistress is costume designer Natalie Tippett, according to new claims.

The subject gets expanded upon in “Madeline,” where she talks to the mistress about the events that transpired. "I know none of this is your fault / Messaging you feels kind of assaultive," she sings in the first lines. "Saw your text, that's how I found out / Tell me the truth and his motives."