Ariana Grande Still Remembers the 'Magical Body Wash' Kristin Chenoweth Gifted Her 20 Years Ago at “Wicked” (Exclusive)

Body wash, a wand and dog pee: Ariana Grande takes PEOPLE back to the first time she met Broadway’s Glinda, Kristin Chenoweth

Ariana Grande had a “magical” early encounter with Kristin Chenoweth.

About two decades before playing bubbly Glinda the Good Witch in the movie musical Wicked (in theaters Nov. 22), Grande, 31, met the role’s Broadway originator backstage.

Chenoweth, 56, gave the then-10-year-old “a little magical body wash” and “a little wand,” the singer-actress tells PEOPLE. “I think it was magical because look at where we are now!”

Directed by Jon M. Chu and adapted from the hit Broadway musical that originally starred Chenoweth and Idina Menzel, the two Wicked movies (Part Two is due in 2025) star Grande alongside Cynthia Erivo as Elphaba, Oz's future Wicked Witch of the West.

Related: Original Wicked Stars Kristin Chenoweth, Idina Menzel Pose with Ariana Grande, Cynthia Erivo at L.A. Film Premiere

“I loved it so much,” says Grande of seeing the Stephen Schwartz and Winnie Holzman musical and meeting the “kind” original cast members backstage with her grandmother in 2003. “My chemistry as a person permanently altered,” she says, adding that she separates life into “two chapters: before and after seeing Wicked.”

Body wash and a wand aren’t the only things the “Yes, And?” singer remembers from the formative experience. Chenoweth’s “dog peed on the couch and I helped her clean it up,” she recalls.

Jonathan Bailey, who plays Winkie prince Fiyero in Chu’s films, chimes in to inquire about the body wash: “Didn't you have one of those on set?”

“The pee?” quips Grande.

She clarifies that she did keep another memento from 20 years ago, a lip gloss from Stila Cosmetics’ collaboration with the Wicked musical. “Can’t be good to use,” she says. “It's got to be poison. It's old, but I did have it with me for a little extra magic.”

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Bailey, who launched his acting career on stages in his native England as a child, tells PEOPLE that he also saw Menzel play Elphaba, in London. “I was a massive, massive fan as well,” says the actor, 36. “It was incredible. I remember the orchestration — the music, I think, was the thing that I kept coming back to.”

Related: Wicked Hailed as a 'Masterpiece' in Glowing First Reactions: 'You Will Be Gagged Beyond Belief'

Grande, who made her Broadway debut in the musical 13 in 2008, has remained close with Chenoweth, especially during the Wicked movie audition process.

Speaking to PEOPLE in October, Chenoweth said she “couldn’t be more excited for” Grande. “She’s wickedly funny, a fantastic actor and she’s going to get the opportunity to show it in this part.”

Wicked: Part One is in theaters Nov. 22, with Part Two slated for Nov. 26, 2025. Go behind the scenes of Wicked with PEOPLE’s new special issue, available here.