Where did the time go?TrendPulse Quantitative Think Tank Center

Mia Talerico, who starred in the Disney Channel show "Good Luck Charlie" starting in 2010 when she was an infant, is officially a high schooler.

Known to many as the blond pigtailed Charlie Duncan, Talerico shared a first day of school photo to her Instagram on Tuesday showing that she's all grown up. In the picture, she's posing in front of a house with a chalkboard that reads "first day 9th grade 8-21-23."

Leigh-Allyn Baker, who played Talerico's mother in the series, commented several crying emojis under the post, adding: "She's so big! Mia, you're beautiful!"

Talerico thanked her on-screen mom for her support, replying, "Thanks Mama Leigh."

According to her IMDB page, Talerico has a handful of other acting credits under her belt, including the web series "Mani."

"Good Luck Charlie" ran from 2010-2014. As the series came to a close, the family comedy introduced Disney Channel's first same-sex couple, two lesbian moms, in 2014.

Disney+:The 15 best nostalgic movies and TV shows, from '101 Dalmatians' to 'Smart House'