The 'Neighbors 2' star cozied up to her beau and mingled with plenty of her famous pals, as seen in photos recently released from her star-studded bash.
Mandy Moore and Yara Shahidi stunned at the SAG Awards, while Chloe Grace Moretz turned heads at Sundance. These are ET's best dressed celebs for the week of Jan. 21, 2018.