Ariana Grande, her boyfriend Ethan Slater and Ariana's family took her grandmother Marjorie, who turned 99 in October, to see 'Wicked' in theaters recently

As Wicked takes the box office by storm, Ariana Grande and Kristin Chenoweth are reminding audiences who was the original "friend of Dorothy."

Ariana Grande, pop singer-turned-actress playing “Glinda” in Wicked, explored her character’s sexuality while doing an interview promoting the new film. Grande and her co-star Cynthia Erivo, who plays Elphaba,