“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…
