By Brandi Fowler
Updated: Jul 28, 2016 @ 6:42 pm
Mike Coppola/Getty Images

Not much has changed since Katie Holmes's high school days. The Ray Donovan star looks almost exactly the same as she did when she was a student at St. John's high school in Toledo, Ohio, as can be seen in a throwback snap Holmes shared on Instagram Thursday.

"#tbt #high school St. John's musical days #grateful #toledo," Holmes captioned the photo, which showed her flashing a smile as she posed for the camera, huddling with a group of friends and rocking her brunette locks straight.

The actress, now 37, shared another shot of herself in high school just a couple of weeks ago, posting a photo where she stands between her parents, smiling in a jean jacket and white T-shirt. "#tbt my incredible parents and me....high school days #Ohio #family #love," she wrote alongside the sweet snap.

#tbt my incredible parents and me....high school days❤️ #Ohio #family #love

A photo posted by Katie Holmes (@katieholmes212) on

RELATED: Katie Holmes Looks Just Like Her Daughter Suri in This Throwback Photo

Since her high school days, Holmes has mainly stuck to her natural brunette color, but she's switched up her hairstyle quite a bit, rocking trend-setting lobs, long locks, soft waves, and more. And the mom keeps proving she's only getting better with time —just take a look at her showing off her Zac Posen gown from this year's Met Gala.

So much fun #metgala2016 thank u @zacposen and @cartier @djquintero @genevieveherr @theoriginalyangster @julierotondi

A video posted by Katie Holmes (@katieholmes212) on