‘Good Luck Charlie’ child star is all grown up in pic starting senior year of high school

“Good Luck Charlie” alum Mia Talerico is officially a high school senior.

The former child star, 17, took to Instagram Wednesday to share sweet photos of herself holding a chalkboard sign that read, “1st Day Senior Year.”

“Last First Day! Now i’m starting to feel old😭,” she captioned the snaps.

Talerico wore an off-the-shoulder pink top and sandals for her big day, also rocking a fresh French tip manicure.

Several fans and celebs gushed over the Disney alum, including her on-screen dad, Eric Allan Kramer, who wrote, “You make a TV Dad proud.”

“Time goes by so fast!” the Disney Plus Instagram page commented.

Others were in disbelief that she was all grown up, with another chiming in, “I’m old 😭 like whatttt you was just a baby.”

Talerico portrayed Charlie Duncan in the sitcom “Good Luck Charlie” from 2010 to 2014 alongside Bridgit Mendler as Teddy Duncan, Bradley Steven Perry as Gabe Duncan and Jason Dolley as PJ Duncan.

The trio portrayed Charlie’s older siblings, with Kramer as Bob Duncan, their father, and Leigh-Allyn Baker as their on-screen mother, Amy Duncan.

The series ran for 4 seasons, with Talerico being 11 months old when she stepped into the role of Charlie and around 5 years old when the show wrapped.

The cast notably reunited to celebrate the 10th anniversary of the show’s premiere during a Zoom session with “Entertainment Tonight” in 2020.

Reflecting on her time on the show, Talerico said, “I probably had a really easy role ‘cause I just got told most of my lines or didn’t have any.”

“I think it was really easy because most of the time, it was what happened. We just rolled with it, like, in the crawling scene, I just stood up so we just went with it,” she continued.

Since then, the actress has starred in a few short films, including the 2015 production “Shadow Theory” and 2017 short “Photographic Memory.”

Talerico also has a forthcoming project titled “American Summer,” coming to theaters on Sept. 4.