Ariana Grande

Ariana Grande is Dove Cameron's friend and fellow performer. They both performed on Hairspray Live. More specifically, on the song "Mama I'm A Big Girl Now"

Friendship

 * Ariana is seen kissing Dove Cameron in one of her instagram feeds,
 * They're seen hugging each other after the announcement of Hairspray Live.
 * Dove recorded videos singing "Bang Bang" and "Side to Side"
 * She's posted videos listening to "The Light Is Coming" and "Thank You Next"