Pretty Woman
This modern Cinderella story tells the tale of a wealthy businessman who falls in love with a sex worker. In one scene, Julia Roberts can be seen munching on a croissant—and in the next, she's eating a pancake!
She's All That
This classic 1999 teen rom-com had its fair share of slip-ups. In one scene, Zackary's (Freddie Prinze Jr.) narcissistic high school girlfriend, Taylor (Jodi Lyn O'Keefe), gets a tattoo on her shoulder. During the prom scene, it is revealed that Taylor's tattoo has mysteriously vanished.