Rebel Wilson is all aboard the Wicked train! On Thursday, the Pitch Perfect star shared some adorable pics and vids from a Wicked: For Good event, in which she met Ariana Grande and Cynthia Erivo! She totally fan girled, too! In the Instagram caption, she even shouted out director Jon M. Chu: "WICKED SO GOOD! Congrats to the @wickedmovie team @jonmchu @arianagrande @cynthiaerivo and everyone involved in this sensational film! Just stunning and exquisite work all round!" How sweet! Related: Ariana Addresses Her & Cynthia's Physical Affection With Each Other Throughout the carousel, we can see R...