Zoey 101 is hands-down one of our fave Nickelodeon shows of all time. Who could forget Quinn's crazy hairstyles and kooky catchphrases (Quinnventions!) or Zoey's iconic key necklace decorated with nail polish?
In honor of Throwback Thursday, we thought it would be fun to see just how much the cast's styles have changed. We were shocked by how grown up Jamie Lynn Spears, Victoria Justice, Erin Sanders, and more of our fave stars look since the show started in 2005.
Click through the gallery above to see what the cast of Zoey looks like now. Which style transformation shocked you the most?