Watch the 'Mean Girls' Cast Play a Game of 'So Fetch or Not So Fetch' (Exclusive)

'Mean Girls' stars Reneé Rapp, Angourie Rice, Christopher Briney, Auli'i Cravahlo, Jaquel Spivey, Bebe Wood and Avantika play a game of 'So Fetch or Not So Fetch' with ET's Denny Directo. The cast of the film, which is a new twist on the modern classic, decide which things are 'grool' or whether they're just 'not going to happen.'