Image credit: Paramount/The Picture Desk

ABC News' Rachel Smith, Sabrina Parise and Lauren Sher:

Seventeen years ago, "Clueless" made a certifiable splash across the silver screen and left a permanent mark on pop culture. With its unapologetic passion for fashion, unforgettable lingo - "whatever," "as if," and "going postal" just to name a few - and take-no-prisoners attitude, it became the movie that defined its generation.

"It started a trend," said Stacey Dash, who starred as Cher Horowitz's fashion-forward best friend Dionne in the 1995 flick. "It's the first one with a voice-over about girls in high school and …. just knowing what they wanted and what they liked."

Loosely based on Jane Austen's "Emma," the movie follows Cher, a popular and sweetly superficial teenager, and her friends as they navigate the over-the-top social scene at Beverly Hills high school, consumed by popularity, love interests, and of course, makeovers.

"Good Morning America" caught up with the cast while they were reuniting for a photo shoot for Entertainment Weekly magazine's Reunions Issue last month.

Alicia Silverstone (Cher), Stacey Dash (Dionne), Donald Faison (Dionne's boyfriend Murray), Breckin Meyer (slacker/skater Travis), Elisa Donovan (friend/foe Amber), Justin Walker (Cher's love interest/fashion buddy Christian), Jeremy Sisto (popular boy Elton), Twink Caplan (teacher Miss Geist) and the rest of the cast reminisced about how the movie changed their careers.

"It started all of our careers. It definitely started, kick started mine. I was able to go on to other things because of this movie," said Donald Faison, who starred as Dionne's boyfriend Murray in the flick and went on to appear in hit TV shows including "Scrubs."

"People will still come up to me about that movie, and I'm like, I'm like 100 years old now," said Elisa Donovan, who played Amber, Cher's fashion follower best known for her "whatever" gesture. "They remember this movie. It's amazing."

In 1995, the now pop culture phenomenon was a surprisingly hard script to sell and almost didn't make it to the big screen.

"At the time people were saying, 'Who wants to watch a bunch of young people?'" Silverstone said.

Turns out, millions did, falling in love with the characters and fashion. From outrageous hats to head-to-toe plaid accessorized with baby backpacks, to say that fashion was its own character in the movie would be an understatement.

"I thought it was very fashionable. I felt like Audrey Hepburn," Dash said of Dionne's signature bucket hat and envelope-pushing outfits. "I totally loved [Dionne's fashion]. I loved her."

Cher's unforgettable computerized closet was the envy of every teenage girl. As she scanned her wardrobe and made sure not to mismatch looks, she stepped out in some eye-catching outfits: her signature sheer blouses with high knee socks and argyle skirts (accessorized with a pink feather pen for effect), and that form-fitting, white Calvin Klein mini dress for a date were among the standouts.

"I didn't understand fashion at all," Silverstone said. "I had to do 60 changes … and I was so tired and I had to keep having fittings so I kind of hated them. I hated the clothes. I just didn't get it. Then when I saw the movie I was like, 'I understand!' ….I was 'clueless' about what was going on."

Watch "Good Morning America's All-Star Reunion Blowout" next week as "GMA" and Entertainment Weekly bring together the casts of "Melrose Place," "St. Elsewhere," and more!

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It wasn't just the clothes that made the movie a cult favorite. The catchphrases and quotable lines have lived on in popular culture.

Faison's character, Murray, was a veritable wordsmith when it came to slang. His favorite line of them all?

"He's a disco dancing, Oscar-Wilde reading, Streisand ticket-holding friend of Dorothy," Faison said in the interview, blurting out the line where his character tells Cher that her love interest Christian is gay. "Only reason why I remember that was because it took so long for me to learn it."

Elisa Donovan's favorite line in the movie was part of that memorable scene from the Beverly Hills high school gym class where her character Amber explained to the teacher why she couldn't join the tennis drill: "Ms. Stoger, my plastic surgeon doesn't want me doing any physical activity with balls flying at my face."

"My favorite line was 'There goes your social life,'" Dash added.

Another line that stuck out for Jeremy Sisto besides his character Elton's refrain asking to go to the bathroom was one said by the late actress Brittany Murphy.

"There was this one line from the movie … it always sticks in my head, when Brittany said, 'You're a virgin who can't drive,' and her accent kicks in," Sisto recalled.

Murphy, who died suddenly in 2009 from acute pneumonia, anemia, and drug intoxication according to the coroner's report, played the "clueless" Tai, the newbie who Cher took under her wing and taught the dos and don'ts of how to be popular.

"She was so, so, so genuine and sweet. For a week I couldn't believe it was real, to be honest with you," Walker said about her sudden death. "I was like this cannot be real."

The cast said Murphy's laugh was infectious on set. "She had a contagious laugh," Dash said. "She was just angelic, always happy, always lovable."

Since then, the movie's stars have gone on to star in other movies and TV roles, big and small, but where do they think their "Clueless" characters would be today?

Stacey Dash: "I think Dionne would probably be a big fashion editor in New York."

Elisa Donovan: "Amber would be married to an extremely wealthy man driving him crazy."

Alicia Silverstone: Cher would be "married to her brother!"

Justin Walker: "I think [Christian would] be an aging back up dancer for Lady Gaga."

Breckin Meyer: "I like to think Travis and Tai would still be together and would create Instagram or something by accident."

Twink Caplan: "I think Miss Geist would be married to Mr. Hall, would've retired, and he teaches at a college and I write romantic novels. That are really dirty."

Breckin Meyer: "50 Shades of Geist!"

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For more information on the EW Reunions Issue, visit ew.com/reunions. Fans can bid on memorabilia, meet-and-greets, and more from some of the stars featured in the Reunions issue. Visit charitybuzz.com for more information.