"I always thought of this moment and yet here we are," the mother of two writes in her Instagram post dated October 24.
The blogger-radio DJ swells with pride as she watches Olivia getting giddy about school.
She continues in her post, "You were so excited to wear your uniform that when we bought it you didn't remove it until we got home cause you wanted to show dad. You bugged me the whole week to buy you black shoes.
"You even woke up extra early to fix your bags and pack your baon. I could see the excitement in your eyes when I dropped you.
"I love you Oli. This is it! A new chapter, a new adventure. The world is yours, take it my love. Love, mom."
Andi ends her post with this line, "Runs to a corner and cries."
Olivia turned four last March.