Fun Size is a 2012 American teen comedy film written by Max Werner and directed by Josh Schwartz. It stars Victoria Justice, Jane Levy, Thomas McDonell, Thomas Mann, and Chelsea Handler. It was produced by Nickelodeon Movies, Anonymous Content, and Fake Empire Productions and distributed by Paramount Pictures. It was the second time a Nickelodeon film received a PG-13 rating, since Angus, Thongs and Perfect Snogging, which was released straight-to-DVD in the US. However, it is the studio's first American and theatrically released film with that rating.
In Cleveland, Ohio, Wren DeSantis (Victoria Justice) and her friend April (Jane Levy) are invited to a Halloween party by her crush, Aaron Riley (Thomas McDonell), but she is also ordered by her widowed mother, Joy (Chelsea Handler) to take her oddball brother Albert with her when he goes out trick-or-treating on Halloween. When she loses him in a haunted house, she must find him before her mother finds out.
- Victoria Justice as Wren DeSantis, the main protagonist. Has a crush on Aaron Riley.
- Jane Levy as April Martin-Danzinger-Ross, Wren's best friend; she is very self-absorbed and would rather drag Wren to a cool kids' party over finding her brother.
- Thomas McDonell as Aaron Riley, the most popular guy in school and Wren's crush.
- Thomas Mann as Roosevelt Leroux, one of the nerds that helps Wren. He has strong feelings for Wren.
- Chelsea Handler as Joy DeSantis, Wren and Albert's mom.
- Jackson Nicoll as Albert DeSantis, Wren's 8-year-old brother.
- Osric Chau as Peng, Roosevelt's best friend and fellow nerd who helps Wren; he has a crush on April.
- Josh Pence as Keevin (pronounced Keeven), Joy's 26-year-old boyfriend.
- Johnny Knoxville (uncredited) as Jörgen, the main antagonist.
- Thomas Middleditch as Manuel/Fuzzy, a clerk who befriends Albert, and Lara's former boyfriend
- Ana Gasteyer as Jackie Leroux, Roosevelt's mom
- Kerri Kenney-Silver as Barb Leroux, Roosevelt's other mom
- Holmes Osborne as Mr. Brueder
- Annie Fitzpatrick as Mrs. Brueder
- James Pumphrey as Nate Brueder, a friend of Keevin's who hosts a raging party in his parents' basement.
Peter Navy Tuiasosopo as Mr. Mahani (Samoan man)
- Abby Elliott as Lara, Jörgen's girlfriend
- Riki Lindhome as Denise, a young woman in a Galaxy Scout costume.