Reneé Rapp Promises 'Hot' 'SNL' Debut and Hints at Megan Thee Stallion Cameo! (Exclusive)

Reneé Rapp chats with ET’s Rachel Smith at the New York premiere of 'Mean Girls,' in theaters Jan. 12. The actress teases her 'Saturday Night Live' debut as musical guest and hints at a cameo from Megan Thee Stallion. Plus, Lorne Michaels plays coy about whether Reneé will take part in some 'SNL' skits while Busy Philipps gushes about getting to play Reneé's mom in the movie.