Rewind·Posted on Jul 21, 201823 Lies And Tricks From Your Favorite Movies That You Actually Fell ForFYI: Zac Efron didn't actually sing in High School Musical.by Spencer AlthouseBuzzFeed StaffFacebookPinterestTwitterMailLink We asked the BuzzFeed Community to tell us the tricks, lies, and dupes their favorite movies have pulled on them. Here are the jaw-dropping results. 1. Zac Efron didn't actually sing in the first High School Musical movie – most of the singing voice was provided by Drew Seeley. Disney / Warner Premiere Apparently Zac Efron wasn't even told why his singing voice was cut in the first film, and he had to fight to get it used in the second movie. —mcdoodie 2. Remember Jessie from The Parent Trap? Yeah, the character's name was actually "Chessy." Buena Vista Pictures —lisar4c8b27231 3. Rachel McAdams' hair in Mean Girls wasn't actually dyed – it was a wig. Paramount Pictures —briannarose15 4. In reality, when Pocahontas and John Smith first met, Smith was 28 years old and Pocahontas was about 10. Disney In his biography, Smith's impression of Pocahontas was that she was "a child of 10 years old." He wrote that in 1608 but was born in 1580.—rochellem13 5. Julia Roberts' head was superimposed onto her body double's body for the Pretty Woman movie poster. Buena Vista Pictures Roberts also used the same body double, Shelley Michelle, to film several closeup scenes in the film.—leannetillyk 6. Haylie Duff, Hilary Duff's sister, was actually the one who provided the singing voice for Isabella in The Lizzie McGuire Movie. Disney —Tayla Leigh Sargent, Facebook 7. In A League of Their Own, the older version of Dottie was ~not~ actually played by Geena Davis. Columbia Pictures Instead of using makeup or special effects to make Geena Davis look like an elderly woman, they simply hired a separate actress (Lynn Cartwright) and dubbed her voice.—Julie Kennedy, Facebook 8. Despite playing a young teen in The Karate Kid, baby-face Ralph Macchio was actually 22 when he filmed the movie. Columbia Pictures —erinp12 9. The country of Genovia from The Princess Diaries series isn't actually a country at all – they made it up. Disney —juliak41c88d777 10. FYI: Jennifer Lopez's singing voice didn't even make it into the movie Selena. Warner Bros. / youtube.com Lopez had to sing for her audition, but the movie used Selena's actual singing voice for the songs.—sarar4a0edff66 11. And Rebecca Ferguson didn't actually sing as Jenny Lind in The Greatest Showman. 20th Century Fox Instead, singer Loren Allred provided her vocals for the film.—matb2003 12. Also, just a heads up that Donny Osmond sang the vocals for Li Shang in Mulan. Disney —Elise Haverstick, Facebook 13. Even though Titanic was based on a true story and real passengers, James Cameron completely made up the characters of Jack and Rose. Paramount Pictures —victoriaannb2 14. And even though it looks like those final scenes were filmed in the ocean, they were actually shot in a pool. Paramount Pictures / youtube.com / youtube.com —christinek4a0817e7c 15. Michael J. Fox played multiple characters in Back to the Future Part II, including his own daughter, Marlene McFly. Universal Pictures In the movie he portrays Marty, old Marty, Marty Jr., and Marlene.—jordans43125d2f3 16. Speaking of multiples, it took 48 different piglets to play the title pig in Babe. Universal Pictures —karinap40c4e41da 17. Wendy Makkena, aka Sister Mary Robert from Sister Act 2, lip synced alllllll of the singing throughout the movie. Buena Vista Pictures —spenceralthouse 18. You remember Zachary Binx from Hocus Pocus, right? Wrong. His name was actually "Thackery." Buena Vista Pictures —clizvega 19. And just so you know, Thackery was played by two different people: Sean Murray was the real-life actor, and Jason Marsden voiced the cat. Buena Vista Pictures —clizvega 20. All of the raptor noises from Jurassic Park are actually the sounds of mating tortoises. Universal Pictures —ijenn0802 21. Forrest Gump wasn't actually based on a true story, despite the movie's depiction of very real events. Paramount Pictures However, it was based on a 1986 book of the same name.—saraw19 22. And that means he wasn't actually the owner of Bubba Gump Shrimp. In fact, the restaurant chain didn't even exist until ~after~ the movie was released. Paramount Pictures Paramount Pictures basically wanted to hone in on the movie's success, so they created the idea for a themed restaurant. The first Bubba Gump Shrimp Co. was opened in 1996, two years after Forrest Gump was released.—dawnnolaforeverc 23. And the most cool trick of all was that all of the babies from Rugrats in Paris: The Movie were voiced by women. Nickelodeon / youtube.com / youtube.com Elizabeth Daily voiced Tommy PicklesKath Soucie voiced Phil and Lil DeVille Cheryl Chase voiced Angelica PicklesChristine Cavanaugh voiced Chuckie Finster—Joanna Wurtzel, Facebook Want to be featured in similar BuzzFeed posts? Follow the BuzzFeed Community on Facebook and Twitter!