When Chanel #3 (Billie Lourd) asks Dr Cassidy's mom to let him decide what to do, his mom replies with "would you rather betray the memory of your saint of a father, break your mother's heart and run off with earmuffs here or finish the job you were raised from a pup to complete?"
This is inferring the fact that the actor who portrays him is none other than Taylor Lautner, best known as Jacob on Twilight, who turns into a wolf.
Abigail Breslin (Chanel #5) and Lea Michele (Hester) previously starred together in the movie 'New Year's Eve (2011)
Emma Roberts (Chanel Oberlin) and Taylor Lautner (Dr. Cassidy Cascade) previously starred in the movie Valentine's Day (2010) together.