Katherine Schwarzenegger Pratt and daughter Eloise.Photo: Katherine Schwarzenegger/Instagram

Katherine Schwarzenegger Pratt’s youngest has hit a major milestone.
In the cute shot, the mom of two holds Eloise and smiles at the little girl, with the mother-daughter duo dressed in complimentary pink and white outfits.
Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.
Katherine Schwarzenegger Pratt celebrates daughter Eloise’s first birthday.Katherine Schwarzenegger/Instagram

“She’s pure joy, fun and happiness. She’s keeping up with her sister and having a blast. I can’t believe she’s already 1 🥹! I love you Eloise! ♥️🙏🌺.”
Schwarzenegger Pratt, who also shares daughterLyla Maria, 2, with husbandChris Pratt, shared photos of the decor from the birthday celebration, including a colorful balloon arrangement centered around a big “1.”
Another photo shared on Instagram shows both girls' little hands exploring a tiny birthday cake for Eloise.
Pratt celebrated his wife, as well as both of their moms, in anInstagram postearlier this month for Mother’s Day.
“Happy Mother’s Day to all of the mothers out there. Especially grateful today for Katherine. You’re a wonderful partner. You’ve provided me such a blessed life. Our two daughters are so lucky to have you and you’re the best step mama to Jack,” he wrote.
“And to my mom, Kathy, you raised us with such love and light and laughter— so grateful for you today and always. And to Maria, the best Mama G, I’m lucky to have you as a mother-in-law. And to all of the other moms in my life, I’m so grateful for all you do- thank you so much. Hope you feel celebrated today.”
source: people.com