Mia Talerico is all grown up.

The 16-year-old, who played the titular baby in Disney Channel's Good Luck Charlie , started her junior year of high school on Aug. 20.

"First day of 11th grade," Mia wrote on a chalkboard sign in an Instagram photo , adding in the caption of her post, "Wish me good luck."

Needless to say, many fans felt like it was just yesterday Mia was a toddler on the Disney Channel show, which ran for four seasons from 2010 to 2004.

"Anyone else feel very old rn?" one Instagram quipped, with a second writing in the comments section, "That’s so crazyyy we literally all watch her grow up."

A third fan added, "This is really the same charlie i grew up watching. im 22 now."

Also starring Bridgit Mendler , Jason Dolley , Bradley Steven Perry , Leigh-All

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