Question: What is a 1995 American coming-of-age comedy film written and directed by Amy Heckerling, that  is based off of  a series of young adult novels, mainly written by H. B. Gilmour and Randi Reisfeld?

Context articles: Clueless (novels)
Allen Zadoff
Taming the Star Runner
Look Who's Talking
Twitches (novel series)
National Lampoon's European Vacation
Fast Times at Ridgemont High
Twitches (film series)
Left Behind: The Kids
Clueless (film)

The Clueless series is a series of young adult novels, mainly written by H. B. Gilmour and Randi Reisfeld.
 The series is published by Simon & Schuster.
 The series was generated after the release of the 1995 movie starring Alicia Silverstone.
Allen Zadoff is an American author of young adult fiction.
 He is mainly known for his young adult novels including "The Unknown Assassin" series.
 His novel "Food, Girls, and Other Things I Can’t Have" was awarded the 2010 Sid Fleischman Humor Award from the Society of Children's Book Writers and Illustrators.
 and was included in Popular Young Adult Paperbacks of 2012 by YALSA.
 It has also been optioned for a feature film.
 His other novels for young adults include "My Life, the Theater, and Other Tragedies" and "Since You Left Me".
 He is also the author of The Unknown Assassin books from Little Brown Books for Young Readers.
Taming the Star Runner (1988) is a young adult coming-of-age novel written by S. E. Hinton, author of "The Outsiders".
 Unlike her previous young adult novels, this novel has not been made into a film yet.
Look Who's Talking is a 1989 American romantic comedy film written and directed by Amy Heckerling, and stars John Travolta and Kirstie Alley.
 Bruce Willis plays the voice of Mollie's son, Mikey.
 The film features George Segal as Albert, the illegitimate father of Mikey.
T*Witches is an American children's fantasy novel series by H. B. Gilmour and Randi Reisfeld published between 2001 and 2004.
 The cover art and design is by David Loew and Joyce White.
 The books were published by Scholastic Press, a subsidiary of the Scholastic Corporation, who also published the British Harry Potter series by J.K. Rowling and the Canadian Anne of Green Gables series by Lucy Maud Montgomery.
European Vacation (originally given the working title Vacation '2' Europe) is a 1985 American comedy film directed by Amy Heckerling and written by John Hughes and Robert Klane based on a story by Hughes.
 The second film in National Lampoon's "Vacation" film series, it stars Chevy Chase and Beverly D'Angelo.
 Dana Hill and Jason Lively replace Dana Barron and Anthony Michael Hall as Griswald children Audrey and Rusty.
 After Hall declined to reprise his role (he decided to star in "Weird Science" instead), the producers decided to recast both children.
Fast Times at Ridgemont High is a 1982 American coming-of-age comedy film directed by Amy Heckerling and written by Cameron Crowe, adapted from his 1981 book of the same name.
 Crowe went undercover at Clairemont High School in San Diego and wrote about his experiences.
Twitches are two direct-to-video television films produced by Broomsticks Productions Limited and distributed by Walt Disney Studios Home Entertainment.
 It is directed by Stuart Gillard, written by Dan Berendsen, created by Carla Singer and Kevin Lafferty, music by John Van Tongeren, adapted from the novel series of the same name by H.B. Gilmour and Randi Reisfeld; and stars Tia Mowry and Tamera Mowry.
 Television premieres are part of Disney Channel's Hauntober Fest.
 The first film was released as a Disney Channel Original Movie, and after its immediate success it was followed by a television sequel.
"Left Behind: The Kids (stylized as LEFT BEHIND >THE KIDS<)" is a series written by Jerry B. Jenkins, Tim LaHaye, and Chris Fabry.
 The series consists of 40 short novels aimed primarily at the young adult market based on the adult series Left Behind also written by Jerry B. Jenkins.
 It follows a core group of teenagers as they experience the rapture and tribulation, based on scriptures found in the Bible, and background plots introduced in the adult novels.
 Like the adult series, the books were published by Tyndale House Publishing, and released over the 7 year period of 1997-2004.
 The series has sold over 11 million copies worldwide.
Clueless is a 1995 American coming-of-age comedy film written and directed by Amy Heckerling.
 It stars Alicia Silverstone, Stacey Dash, Paul Rudd and Brittany Murphy, and was produced by Scott Rudin and Robert Lawrence.
 It is loosely based on Jane Austen's 1815 novel "Emma", updating the setting to modern-day Beverly Hills.