Good luck in high school, Mia Talerico!
After all, the Good Luck Charlie star—who played the titular toddler on the Disney Channel show—started her sophomore year on Aug. 19.
To mark the occasion, Mia shared photos of herself during her first day of class, joking on Instagram, “Cue the comments about feeling old.”
And just as the 15-year-old predicted, fans couldn’t get over just how quickly she’s grown up in front of their eyes, with one quipping, “You’re right we do feel old.”
“You were just a baby!! I was just a baby!!” a second Instagram user commented. “And since you’re now a sophomore, I’m definitely getting old!”
Meanwhile, a third fan pointed out that Mia is around the same age her onscreen sister Teddy—played by Bridgit Mendler—was when she “started making the video diaries” for Charlie.
“That’s insane,” the fan added, “but so amazing and wonderful to see!!”