Shailene Woodley as Beatrice Prior (Also known from The Fault in Our Stars as Hazel Grace Landcaster, The Spectacular Now as Aimee Finecky, The Secret Life of the American TeeFnager as Amy Jurgens and The Descendants as Alexandria King)
Theo James as Tobias Eaton (Also known from Golden Boy as Walter Clark, Underworld: The Awakening as David, and London Fields as Guy Clinch)
Kate Winslet as Jeanine Matthews (Also known from Labor Day as Adele, The Titanic as Rose DeWitt Bukater, Sense and Sensibility as Marianne Dashwood, and The Dressmaker as Myrtle Dunnage)
Jai Courtney as Eric (Also known from I, Frankenstein as Gideon, A Good Day to Die Hard as Jack McClane, Jack Reacher as Charlie, and The Water Diviner as Lt-Col Cecil Hilton)
Miles Teller as Peter (Also known from The Spectacular Now as Sutter Keeley (Staring in it with Shailene) Get a Job as Will Davis, That Awkward Moment as Daniel, 21 & Over as Miller, Footloose as Willard, Rabbit Hole as Jason, and Two Night Stand as Alec)
Ansel Elgort as Caleb Prior (Also known from The Fault in Our Stars as Augustus Waters (Staring in it with Shailene) and Carrie as Tommy Ross)
Zoe Kravitz as Christina (Also known from After Earth as Senshi Raige, and X-men First Class as Angel Salvadore)
Ray Stevenson as Marcus Eaton (Also known from Thor as Volstagg, Thor: The Dark World as Volstagg, and The Three Muskateers as Porthos)
Maggie Q as Tori (Also known from Nikita as Nikita)
Look at The Mortal Instruments Page for some really cool extras written by Cassie herself
The Fault in Our Stars Book Review and Trailer is below