By Brandi Fowler
Updated Jul 28, 2016 @ 6:45 pm
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Credit: 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.

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.