Kimberly Stewart and Benicio Del Toro's little girl is growing up!
"BTS Grade 5 ❤️," she captioned the photo, where her daughter leans into her wearing a white shirt, khaki skirt and colorful pastel sneakers with plenty of bracelets on her wrist.
Many commenters noticed that Delilah is quickly catching up to her mom's height.
Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.
Last month, Delilah celebrated her 11th birthday, which grandmother Alana Stewart posted about on Instagram. "Delilah is 11 today! Happy Birthday, my angel!! 🎂🎈❤."
Delilah also posed with her mom days earlier as she returned home from being away for the summer.
"Got my baby back ❤️," Kimberly captioned the sweet mother-daughter post.
Kimberly spoke with PEOPLE in February 2021 about rearranging her daughter's closet, which was part of the organization journey she went on that inspired her to start her organizing company, The Realm.
Even though Delilah inherited her mom's knack for organization, Kimberly said she had trouble getting rid of things.
"Delilah sometimes will wear a favorite article of clothing until it is two sizes too small, at which point Mama steps in," she said at the time with a laugh.
"I like to keep it simple for kids when they are at the age where they dress themselves. I have everything for Delilah in categories like play clothes, school clothes, dress up, etc."