Jennifer Coolidge reprised her role as Paulette from Legally Blonde. youtube.com Kris Jenner played Regina George/Ariana Grande's cool mom. youtube.com Troye Sivan played a teen influenced by Ariana Grande. youtube.com Stefanie Drummond came back as her original role from Mean Girls . Colleen Ballinger (aka Miranda Sings) was in the vid. youtube.com Another YouTuber Gabi DeMartino was also in it (she's the one who looks like Ariana Grande). youtube.com Jonathan Bennet also appeared as his old self, Aaron Samuels. youtube.com Matt Bennett (no relation to the fictional Jonathan) who is Ariana's former Victorious co-star showed up. youtube.com As did Liz Gillies, another Victorious co-star, who was the music video's Lindsay Lohan. youtube.com And finally, Frankie Grande (Ariana's brother) made a cameo too. As a figure skater on a poster on the wall. Thank u, NEXT!!!!!!!