After “Sinners” dominated the 2026 award show season, Hailee Steinfeld is celebrating more great news.

On Thursday, the “Sinners” star and her husband, Buffalo Bills quarterback Josh Allen, announced on her Substack newsletter Beau Society that they have welcomed their first child together.

“Special delivery ... Our baby girl has arrived!!” the 29-year-old actor wrote. “We’re feeling incredibly grateful and blessed and savouring these early moments. Thank you so much for the love and well wishes.”

Steinfield and Allen didn’t share the date of birth or the name of their baby girl in the post.

Months after they tied the knot in May 2025, the couple announced on social media in December that they were expecting their first baby together in an adorable winter-themed Instagram video.