Celebrity Baby Name Revealed
Hailee Steinfeld and Josh Allen Share Daughter's Name, Harper Haize Allen, in Intimate Letter
Key Points
In the June 19 letter, Steinfeld told her daughter she wants “your baby hair to stay this soft forever,” and described a hopeful future moment: “the day you might ask me to braid it down your back while we’re sitting in the grass.”
Steinfeld’s Beau Society newsletter didn’t just include the name reveal—she also answered a reader prompt: “If my daughter were to read Beau Society one day, what’s something I hope she learns about who I am at this point in my life?” before sharing the baby’s name.
The reports also provided a fuller timeline around the relationship and pregnancy: Allen and Steinfeld announced their engagement in November 2024, married in May 2025, shared a pregnancy announcement in December 2025, and confirmed the baby’s birth in April.
Alongside the personal letter, Steinfeld indicated that becoming a mother has brought out “a new version of herself,” according to coverage of her Beau Society update.
Hailee Steinfeld and Josh Allen have a name for their baby girl: Harper Haize Allen. Steinfeld revealed the name in a heartfelt letter published June 19 in her Beau Society newsletter, addressed directly to her 2-month-old daughter. InStyle reported the letter reflected on the early, tender realities of new motherhood.
The couple had confirmed their daughter's birth in April but kept her name private for over two months. Yahoo noted they waited more than two months before sharing the detail publicly, choosing their own platform over a traditional media exclusive.
A Letter to Harper, Written in Soft and Quiet Words
Steinfeld's June 19 letter was not a simple announcement. It was written directly to her daughter. She told Harper she wants "your baby hair to stay this soft forever." She also imagined a future moment: "the day you might ask me to braid it down your back while we're sitting in the grass," according to AOL.
The letter also answered a reader prompt from the newsletter. Steinfeld responded to the question: "If my daughter were to read Beau Society one day, what's something I hope she learns about who I am at this point in my life?" InStyle reported that Steinfeld described becoming a mother as bringing out "a new version of herself" — one that is "smaller, quieter, and more joyful."
From Engagement to Harper: A Two-Year Relationship Timeline
Allen and Steinfeld went public in May 2023. They announced their engagement in November 2024. A private wedding followed in May 2025. Steinfeld confirmed her pregnancy in December 2025, and the baby arrived in April 2026, according to Newsweek. The name reveal on June 19 completed the final chapter of the announcement arc.
WHEC noted that Allen is now "outnumbered by girls" — a lighthearted nod to his household, which includes Steinfeld and their new daughter. The couple has shared each milestone on their own terms, avoiding tabloid deals at every step.
Steinfeld Chose Her Newsletter Over a Tabloid Deal
Rather than selling the name reveal to a magazine, Steinfeld published it through Beau Society, her own lifestyle newsletter. Yahoo reported the letter ran on her Substack-style platform, giving her full control over the story. The move drove a reported 400% spike in new subscribers within 24 hours.
The strategy mirrors moves made by other celebrities who have built direct-to-reader platforms. By keeping the reveal in-house, Allen and Steinfeld turned a personal moment into a platform-building event — without giving up the intimacy of the message itself.
Allen Steps Into His 'Girl Dad' Era Before Training Camp
For Allen, the reveal lands at a significant personal and professional moment. He is in the middle of a $258 million contract extension with the Buffalo Bills. The June name reveal came during the NFL's quiet period between minicamp and training camp — meaning sports media had room to cover it without game-day competition.
Newsweek noted that Allen and Steinfeld made their first public appearance together at NFL Honors in February 2025. Since then, Steinfeld has become a visible presence in Buffalo. The Bills fanbase, known as Bills Mafia, has embraced her warmly — and Harper Haize Allen now gives them one more reason to cheer.
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