Article continues below advertisementCynthia Erivo is very protective of Wicked costar Ariana Grande.Their bond was put on display when an overly enthusiastic fan charged at Grande on the yellow brick road-inspired red carpet at the Wicked: For Good premiere in Singapore on Thursday, November 13.After a rogue man sprinted at the "Break Free" singer and put his arm around her, Erivo, 38, immediately lunged toward him and shielded Grande, 32.