Hailee Steinfeld Introduces Newborn Daughter Harper Haize in Personal Letter

Hailee Steinfeld has unveiled the name of her and Josh Allen's baby girl through an intimate announcement in her latest Beau Society newsletter.

The 29-year-old actress and the 30-year-old Buffalo Bills quarterback welcomed their first child in early April and have named their daughter Harper Haize. The name reveal came in the newsletter released Friday, June 19.

Alongside the announcement, Steinfeld shared a heartfelt letter addressed to her newborn, offering a window into her experience of early motherhood. In the message, she reflects on the surreal nature of having her daughter in her life and the ways parenthood has already shifted her perspective on time and daily routines.

"I'm in awe of you," Steinfeld begins, describing how the months since Harper's arrival have felt simultaneously endless and fleeting. She writes about how motherhood has transformed her understanding of time itself—no longer measured in conventional units but rather in feeding schedules, naps, and the small victories of successfully transferring a sleeping infant.

The letter touches on the bittersweet emotions of watching her daughter grow, expressing both a desire to preserve her as she is now and anticipation for the milestones ahead. Steinfeld reflects on how motherhood has revealed new versions of herself—softer, stronger, more patient—and acknowledges that her daughter has already become her greatest teacher.

She also notes that her husband will soon find himself outnumbered during family movie selections, hinting at the joyful dynamics of their growing household.

Steinfeld and Allen began dating in May 2023 and married on May 31, 2025. The couple announced they were expecting in October 2025.

In recent weeks, the actress has also shared updates about her postpartum wellness journey with her newsletter subscribers and marked her first Mother's Day with family celebrations.