#20: Alicia Silverstone
We all remember Alicia Silverstone as Cher in Clueless (1995), and as promising an actress as she seemed after that performance, her career never quite took off. She was big during the 90s thanks to her iconic Clueless role, which remains a beloved teenager movie to this day, but Alicia Silverstone seems to have faded away from the limelight.
She continued acting after Clueless, but for some reason, she never got the right casting, and the films she was in were all box-office flops. Eventually, she gave up acting altogether.