Jon M. Chu’s musical starring Ariana Grande and Cynthia Erivo is defying gravity at the box office — but it was a winding yellow-brick road of Hollywood adaptations to get here from 'The Wizard of Oz' (1939).

At the end of the Yellow Brick Road, somewhere over the rainbow, you will find ... the moon.

In “Wicked: Part One” The Wizard (Jeff Goldblum) enlists Elphaba and Galinda to help him decide on a color for a super-sidewalk that will thread throughout Oz that he’s building (yellow, naturally, wins).

As a theater kid and movie fanatic, I simply cannot stop singing the Wicked soundtrack, checking out all the new Mattel dolls, and re-watching the Wicked trailer. And I absolutely wore Glinda's signature pink when the Wicked movie flew into theaters2.

Wicked’ retells the story of ‘The Wizard of Oz’ through the perspective of the Wicked Witch (Cynthia Erivo) and Glinda (Ariana Grande).