JIM CARREY

Ariana Grande had to hold back tears when she met her childhood crush, Jim Carrey. "I was kind of nervous to meet him, you know, he's been my crush forever. What if he's not as nice as I'm expecting?” she shares.

But Jim surpassed all of her expectations. “He was so over-the-top nice, and perfect, and just as I hoped he'd be,” she smiles. “He told me in his Jim Carrey way, 'Remember, be nice.’”