The identity of the woman allegedly involved in an affair with Lily Allen’s estranged husband, David Harbour, has been revealed as costume designer Natalie Tippett. This revelation comes as Tippett breaks her silence in a recent interview, coinciding with the release of Allen’s new album that references the infidelity.
In a development that has captured public attention, Natalie Tippett, a 34-year-old costume designer, has been named as the individual at the center of the alleged affair between “Stranger Things” actor David Harbour and singer Lily Allen. The news emerged through multiple reports published within the last 24 hours, with Tippett speaking to the Daily Mail about the situation. Her identification follows months of speculation surrounding the couple’s separation, which was officially announced earlier this year. The timing aligns with Allen’s release of her album “West End Girl,” where she alludes to the marital breakdown in several tracks.
Tippett and Harbour first met in 2021 while working on the Netflix film “We Have A Ghost,” where she was part of the costume department and he starred in the lead role. According to sources, their professional relationship quickly turned personal, with the alleged affair beginning during the filming in New Orleans. After production wrapped, Harbour reportedly flew Tippett to his home in Atlanta, actions that were kept hidden from Allen at the time. Tippett, who is a single mother to a two-and-a-half-year-old daughter, has described the ongoing publicity as “a little bit scary” due to concerns for her family’s privacy.
The discovery of the affair came when Allen allegedly found intimate text messages between Harbour and Tippett on her husband’s phone. This revelation reportedly led to significant emotional distress for Allen, who later sought treatment at a facility for “emotional turmoil.” The texts themselves have become a focal point, as Allen incorporated them into her music, using direct phrases in songs like “Madeline” to narrate her experience of betrayal. Harbour, 50, has remained silent on the allegations, avoiding public comments on the divorce or infidelity rumors.
Allen’s new album, “West End Girl,” released on October 24, serves as a candid exploration of her marriage’s dissolution, with tracks that detail the pain of infidelity. In “Madeline,” she sings about Harbour breaking the rules of their reportedly open marriage, highlighting the breach of trust. The album has been interpreted by fans and critics as a raw account of her personal struggles, drawing attention to the complexities of their relationship. Tippett acknowledged in her interview that she is aware her private communications were used in the songs but expressed discomfort discussing the matter further.
In her response to the media, Tippett emphasized her desire to protect her family, stating, “I have a family and things to protect.” She confirmed she has heard the song “Madeline” but declined to elaborate on the details of her relationship with Harbour, citing the sensitivity of the situation. The Daily Mail interview marks her first public comments on the affair, which has been a subject of gossip and speculation since the couple’s split was announced. Her reluctance to speak extensively underscores the personal toll such revelations can take on those involved.
Allen and Harbour married in 2020, and their relationship was often in the spotlight due to their high-profile careers. News of their divorce broke in February 2025, with Allen filing for divorce last month, formalizing the separation. Throughout this period, Allen has been open about her emotional challenges, while Harbour has consistently avoided addressing the split in public appearances. The alleged affair with Tippett is seen as a key factor in the marriage’s breakdown, though neither party has confirmed all details officially.
The ongoing coverage of this story highlights the intersection of celebrity, privacy, and personal relationships in the public eye. As Allen continues to promote her album, the narrative around her divorce and the alleged infidelity remains a topic of discussion among fans and media outlets. For Tippett, the exposure brings unwelcome attention, while Harbour’s silence leaves many questions unanswered. The situation illustrates how personal conflicts can become public spectacles, with lasting impacts on those involved.