They grow up too fast, kids.

Celebrity parents have learned this lesson as they sent their children back to school. After all, nothing shows just how much your kids have changed over the years—or even months!—than when you see them in their first-day-of-class outfits.

Make sure to take Vanessa LacheyA mother who marvelled at the speed of time when she saw son recently, was “Time is Flying By”. Phoenix9-year old daughter and a 10-year-old son BrooklynOn her way to school, 7-year-old. She captioned an August 11 Instagram photo that featured the pair in school uniforms, “I’m really not sure how to feel.” “It’s bittersweet.”

What about a nine-year-old boy? Camden went back to school a week later, the Love is blind co-host—who shares her three children with husband Nick Lachey—was equally in awe. We are so proud of this kid for starting a new chapter. She wrote. “Let’s GO, Bud!” 

Vanessa, however, isn’t alone in documenting the academic achievements of her children.