Jessica Alba and Cash Warren's "Baby Girls" Are All Grown Up in Back to School Photos

Time honestly flies when you're a mom—just ask Jessica Alba.

The Fantastic Four actress couldn't help but to marvel at how her and husband Cash Warren's two oldest kids—daughters Honor, 15, and Haven, 12—are already in their teen years when she watched them head back to school on Aug 29. Alongside photos of her daughters posing on the front porch for their first day of classes, Jessica wrote on Instagram, "10th and 7th -where did the time go… (sigh)."

"My baby girls first day of school," she added, completing her post with the hashtags, "Mom is the best life" and "summer is officially over."

And it certainly has been an eventful summer break for the mom of three, who also shares 5-year-old son Hayes with Cash. In June, Jessica and Honor traveled to Paris to catch the 2023 French Open, before heading to London with Haven and Hayes the following month for Wimbledon.

And in addition to taking in a whole lot of tennis, Jessica and Cash, who tied the knot in 2008, enjoyed an enchanting outing with their kids at Taylor Swift's sold-out concert at the SoFi Stadium in Los Angeles earlier this month. "What a show!" the Honest Company co-founder captioned snapshots of the family standing in the audience. "#ErasTour."

But parenting teens hasn't always been vacations and concerts for Jessica. After all, the 42-year-old previously shared that it took family therapy to help her establish a healthy dynamic with her daughters. 

"I went with both of them. And around puberty is when it's the time I think, for me, with my girls," she told People in 2021. "That's when they started to sort of shut down and get really like, 'I don't want to talk any more.' And I'm like, 'We're not doing this. We've got to keep a line of communication here. How can I be a better parent to you? How do you want me to talk to you? Don't shut me out.'"

According to the Dark Angel alum, therapy also helped her accept that her kids are growing up into their own people. "I want to treat them all like babies," she said. "I felt like my relationship really suffered with my parents because they didn't know how to communicate with me and how I needed to be parented. So, I didn't want that breakdown with Honor so we went to therapy together."

To see Honor and Haven—as well as other celeb kids—head back to school, keep reading. 

The Honest Company founder lamented at how quickly time has flown by when Honor, 15, and Haven, 12, headed back to shool to the 10th and seventh grade, respectively. 

"Where did the time go… (sigh)," Jessica—who shares her daughters and 5-year-okd son Hayes with husband Cash Warren—wrote on Instagram. "My baby girls first day of school! #momlifeisthebestlife #summerisofficiallyover #firstdayofschool."

The Saved by the Bell alum sent daughter Gia, 13, and Dominic, 10, back to school in the middle of the week—and the start date left him scratching his head. "Evidently starting school on a Monday is too mainstream," joked Mario, who also shares 4-year-old son Santino with wife Courtney Lopez. "We bout that midweek life out here in Catholic school!"

"‘Twas the first day of school...for both my babies this time together!" Brittany—who shares son Golden "Saigon," 6, and daughter Powerful Queen, 2, with Nick—wrote on Instagram. "And in good focused mom fashion I was too busy to worry about posting on time and all that hoopla. Yeah I said hoopla. just get it done mamas."

The singer and the retired NFL player sent their oldest child off to school in August, with Jessie—who is also mom to son Forrest, 5, and Eric "Bubby" Jr., 8, and is currently pregnant with her fourth child—writing on Instagram. "My baby is growing up so fast. So proud of her."

Britney Spears' nieces are all grown up! Jamie Lynn shared a sweet back-to-school photo of 15-year-old daughter Maddie (with ex Casey Aldridge) posing with 5-year-old daughter Ivey (with husband Jamie Watson).

The Teen Mom 2 star posed for a sweet family photo with Jace, 14, Kaiser, 9, and Ensley, 6, during their first day of school.

"And so it begins! The start of the 'lasts,'" wrote the Sabrina the Teenage Witch alum, who shares her three kids with husband Mark Wilkerson. "Mason's last First day of School. Brady's first day of high school and Tucker heading into 4th grade. A few tears might've been shed."

The TV show host gushed over dropping off one of his twin daughters, Sophia, to college, writing in an Instagram post, "Dropped off the youngest of the tribe @sophialstrahan at college! Can't believe how time has flown by and I'm so proud of her. I know she's going to crush college life!! #DukeDad."

Kobe and Vanessa Bryant's daughter Natalia kickstarted her first day of her junior year as a USC student.

Hilary Duff and husband Matthew Koma's daughters Banks Violet, 4, and Mae James, 2, headed to preschool together.

"First day of preschool" wrote the Dancing With the Stars pro, who shares Sage, 2, with husband Sam Cusick. "my mama heart is aching and also so happy at the same time! Our beautiful Sagey girl is growing up so fast and I'm just so proud of her. she walked right in to her class today and didn't even look back which broke my heart a little but also was so happy at how happy and excited she was for her big day! She ran to me and gave me the biggest hug when I picked her up after though and my heart was bursting."

The "I Got the Boy" singer hilariously snapped photos of her 7-year-old daughter Jolie and 5-year-old son Jace's opposite reactions to back-to-school season. "Someone is excited for their first day of school and someone is not," captioned Jana, who shares her kids with ex Mike Caussin. "2nd grade and the last year of preschool here they come!"

Teen Mom star Amber Portwood's ex Gary Shirley shared a photo of their 14-year-old daughter on her first day of school.

"First day of school for my boys!" captioned the Bachelor alum, who also shares 3-year-old daughter Mia with wiife Catherine Giudici. "Handsome and smart, their dad is the total package."

Savannah Chrisley, who gained custody of her niece and adopted sister, 10, after parents Todd Chrisley and Julie Chrisley were sentenced to prison for tax fraud in November 2022, shared a pic of the child visiting her new school just before her first day of fifth grade.

The And Just Like That... star shared that her 18-year-old daughter Sophie officially marked her first day as a freshman at Howard University. "I am so so proud of you," she wrote in an Instagram post. "We miss you soooo much but we know you got this!! Get to class on time."

In an emotional Instagram post, the Nightcap actress revealed she and her husband George Stephanopoulos dropped their daughter Harper off to college, writing in part, "I know our daughter will thrive. But man, it's brutal on the parents. If you feel inclined-please send me baked goods. I'll be under my covers."

The child star who played the titular toddler in Disney Channel's Good Luck Charlie started high school on Aug. 21.