• 
  Meg Ryan

  Mary
• 
  Kiernan Shipka

  Telulah Farrow
• 
  Beanie Feldstein

  Anna
• 
  Scott Adsit

  Paul
• 
  Susan Blommaert

  Mrs. Smith
• 
  Catherine Curtin

  Ms. Stacy
• 
  Bill Sage

  Mike Bovary
• 
  Dylan Hartigan

  Zack

• 
  Roy Jackson

  Mr. Somma
• 
  Amelie McKendry

  2nd Team
• 
  Bridget Megan Clark

  Charlotte
• 
  Annie Q.

  Rosemarie
• 
  Danny Flaherty

  Hashtag
• 
  All Time Low

  Themselves
• 
  Nadia Alexander

  Kim

• 
  Emily Morden

  Jamie's Sister
• 
  Nicole Coulon

  Holly
• 
  Pico Alexander

  Charlie
• 
  Ted Sutherland

  Scene Boy
• 
  Jon-Christian Costable

  Riley (as Jon Christian Martin Costable)
• 
  Kara Hayward

  Jamie
• 
  Joshua Boone

  Darvan
• 
  Kevin Ho

  Hipster
• 
  Tess Frazer

  Claire Bovary
• 
  Frederick Buford

  Joey
• 
  Courtney Nicole Murphy

  Student
• 
  Alex Gaskarth

  Himself
• 
  Samantha Carroll

  Fan Girl