Wizards of Waverly Place (2007)

S3E24 All About You-Niverse

After using her parents' money to purchase a vending machine, Alex faces consequences for her actions. While contemplating her situation, she discovers a mirror that warns, "Do Not Enter, Alex." Ignoring the warning, she steps into a mesmerizing alternate reality where everything revolves around her. However, when the mirror shatters after Alex hesitates to return to her original life, she finds herself at risk of being trapped in this self-centered 'you-niverse' indefinitely.