Jessica Alba shares photo of her 2 daughters: 'My baby girls'

Jessica Alba's daughters are growing up so fast.

The "Honey" actress and Honest Company co-founder, 42, took to Instagram on Monday to share a snap of daughters Honor, 15, and Haven, 12, ready to tackle 10th and 7th grade, respectively.

Reminiscing in the caption, she wrote, "10th and 7th -where did the time go… (sigh 💔) my baby girls first day of school!"

She also added hashtags #momlifeisthebestlife, #summerisofficiallyover and #firstdayofschool.

Both photos Alba shared show Honor with her arm around Haven, but the girls are giving a bigger smile in the second while giving a more serious look in the first.

Alba recently stepped out with the whole family, including husband Cash Warren and their 5-year-old son Hayes, at one of Taylor Swift's Eras Tour stops in Los Angeles.

Alba and Warren, who tied the knot in 2008, celebrated their 15th wedding anniversary in May.