Hailee Steinfeld Shared Harper's Latest Milestones
The actress documented new developmental stages for her six-month-old daughter in a recent publication.
Updated on Oct. 11, 2026 in Babies
Hailee Steinfeld recently shared a developmental milestone list for her six-month-old daughter, Harper. The update details key physical and nutritional shifts observed as the baby grows.
Why it matters
Documenting developmental milestones allows parents to track a child's progress during the critical first year of growth. For families with infants, these regular check-ins help identify when to introduce solid foods and how to prepare for increased mobility at home.
Harper is currently six months old and has officially begun eating solid foods. She has also achieved the milestone of crawling, a shift from her earlier stages of development.
The players
Hailee Steinfeld
An actress who maintains a personal notebook for documenting her daughter's development.
Harper
The six-month-old daughter of Hailee Steinfeld and Josh Allen.
Josh Allen
A professional athlete who welcomed his daughter with Steinfeld during the 2026 offseason.
The details
Hailee Steinfeld maintains a personal notebook to document these moments as her daughter grows. She shared the milestone list in the October 9 issue of Beau Society, providing insight into the routine of raising an infant during the busy professional schedules maintained by Steinfeld and Josh Allen.
Timeline
• Summer 2026: Hailee Steinfeld wrote a letter to her daughter.
• September 2026: The actress revealed her daughter started crawling.
• October 9, 2026: Steinfeld published the milestone list for Harper.
• October 12, 2026: Buffalo Bills play the Los Angeles Rams.
The Home Front
The introduction of solid foods at six months aligns with standard pediatric health recommendations for infant dietary transitions. This milestone marks a significant change in household logistics and meal preparation requirements for new parents.
Parents of infants should update their own milestone journals to track when their baby starts crawling and accepting solid foods. If you are preparing for a mobile infant, consider childproofing floor spaces and reviewing safety protocols for new food introductions.
The takeaway
Tracking developmental stages provides parents with a record of their child's rapid physical growth throughout the first year. Consult your pediatrician to discuss specific dietary transitions and the best time to start solids for your individual child.
Further reading
For guidance on tracking development and infant nutrition, explore our Babies section.
