AceShowbiz - Hailee Steinfeld and Josh Allen have officially revealed the name of their daughter as Harper Haize Allen. The actress announced the baby’s name in a letter posted on her Beau Society Substack on June 19, 2026, bringing a long-awaited update to fans eager to learn more about the couple’s growing family.

The announcement follows the couple’s confirmation of their daughter’s birth earlier this year in April, and the first public photos Hailee shared of Harper in May to celebrate Mother’s Day. Prior to revealing the name, Hailee affectionately referred to her daughter as "Baby Beau" in earlier newsletter posts, giving followers a glimpse into their family life before the formal introduction of Harper’s full name.

Hailee used her Substack platform to express gratitude and excitement about motherhood, sharing reflections on how her daughter is growing and the profound changes motherhood has brought to her life. She also conveyed the joy and amazement she and Josh feel as parents, noting both the emotional moments and everyday milestones that define their new chapter.

Hailee Steinfeld is known for her breakthrough role as Mattie Ross in True Grit and has built a diverse acting career with over 30 credits, including films like Begin Again, Ender's Game, and Romeo and Juliet. Alongside her acting, she has been candid about her personal life, sharing insights through her Beau Society newsletter where she chronicles her experiences as a mother and partner to NFL MVP Josh Allen.

This public naming of their daughter marks a meaningful moment for the couple as they continue to balance their high-profile careers with family life. Harper Haize Allen’s introduction to the public underscores the couple’s commitment to sharing their journey on their own terms while celebrating the joys and challenges of parenthood.