The actress announced the arrival of her first child with husband Josh Allen in early April

Josh Allen and Hailee Steinfeld; Harper Haize AllenCredit: Kevin Mazur/Getty; Hailee Steinfeld/Instagram
Josh Allen and Hailee Steinfeld; Harper Haize Allen
Credit: Kevin Mazur/Getty; Hailee Steinfeld/Instagram

NEED TO KNOW

  • Hailee Steinfeld said she’s “having so much fun” dressing her 4-month-old daughter Harper in different brands, including Baby Gap and Hill House
  • The actress announced she’d welcomed her first child with husband, Josh Allen, in early April
  • Steinfeld has reflected on cherishing her first summer as a mom, emphasizing the importance of being present with Harper

Hailee Steinfeld is setting the trend!

In a July 24 Beau Society Substack post titled Friday Favorites, the Sinners star, 29, revealed how styling her daughter in different outfits had become one of her favorite parts of motherhood. Steinfeld announced she’d welcomed her first child with her husband, Josh Allen, in early April.

She shared a photo and a link for her latest fashion buy for her 4-month-old trendsetter, Harper Haize Allen — a pink-striped romper that costs $98.

“As Harper gets bigger, I’m having so much fun putting her in little outfits — a few brands I’m loving: Baby Gap, Maisonette, Janie and Jack, and Hill House, where I just got her this precious little bubble outfit,” Steinfeld wrote, adding, “A bit of a splurge, but would make a great gift!”

Hailee Steinfeld and daughter HarperCredit: Hailee Steinfeld/Instagram
Hailee Steinfeld and daughter Harper
Credit: Hailee Steinfeld/Instagram

The Pitch Perfect actress revealed she’s also been overhauling her own wardrobe since summer started.

“Speaking of Hill House, while I was shopping for Harper, I picked up this one-piece on a whim for our vacation, and it’s become my new favorite suit,” she wrote, while linking to Hill House’s The Giana One Piece for $148.

“You know when you order something online, and you’re not sure how it’ll fit? I find one-pieces particularly challenging in that department, but this one is great quality and design,” Steinfeld continued. “I love the square neck and thin straps.”

When it comes to footwear that pairs with the one-piece, she spoke candidly about opting for Rothy’s The Casual Clog because of its ease of sliding on.

“The unsung hero of my summer wardrobe has to be my Rothy’s,” said Steinfeld. “They’re a newer purchase, but they’ve quickly become the leave-by-the-door shoe that I throw on to putter around the house and to walk around the grass with Harper. They’re so comfy!”

Hailee Steinfeld in January 2026Credit: Kevin Mazur/Getty
Hailee Steinfeld in January 2026
Credit: Kevin Mazur/Getty

Elsewhere in the newsletter, the True Grit actress revealed an interest other than fashion that’s been budding since becoming a mother.

“Blame the new mom (or Mother Goose) in me, but I’ve been really sentimental about art recently,” Steinfeld wrote. “The other day I saw a beautiful framed print of a foal and its mom, and I could not stop staring at it — so precious!”

Hailee Steinfeld in September 2025Credit: Eugene Gologursky/Getty
Hailee Steinfeld in September 2025
Credit: Eugene Gologursky/Getty

The glimpse into how the new mom is spending her summer comes after she emphasized in a previous Substack that she wants to be “completely present” while Harper is an infant.

“So this is the only summer that she will be a baby baby. And this will be the only summer that I have her in my arms. By next summer, she’ll be running around,” Steinfeld said of her daughter. 

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“So I think how I’m approaching this summer is… the goal is to just be incredibly present and truly soak up every moment,” she continued. “Because life happens and life moves fast anyway.”

“And I now fully understand what every parent ever has said, like you blink and it all just goes by so fast. It is so very true and so this summer my goal is to be completely present,” the actress concluded.

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