Naya Rivera Is Not the First! Remember All These Other Glee Cast Changes?

Fan favorite, who plays Santana Lopez, won't be returning as a series regular for the final season, but she isn't the first castmember to reduce their role

Another day, another casting shake-up on Glee.

Fans of the Fox hit series will be seeing less of one fan favorite in its sixth and final season: Santana Lopez, as Naya Rivera will no longer be a series regular, E! News has confirmed. Sources tell us that it was Rivera's decision to no longer be on the show full-time, but assure us that she will appear on a recurring basis for Glee's last hoorah. Phew!

And while Rivera's reduced role is certainly one of Glee's most buzzed-about, she isn't the first castmember to change their relationship status with the show since its 2009 premiere.

So let's all gather around for a quick Glee history lesson, shall we? 

After the first round of seniors, including Rachel (Lea Michele) and Kurt (Chris Colfer), graduated at the end of season three, Dianna Agron didn't return as a series regular in season four, opting to make a few visits to Lima after Quinn headed off to Yale. 

And Heather Morris, Rivera's on-screen love interest, also made the decision to reduce her role on Glee after becoming pregnant with her first child in season four. (Her character Brittany did return for a few appearances in season five.)

But Rivera, Agron and Morris aren't the only Glee casting shake-ups Gleeks have endured in the last five seasons. Click through our gallery below for a history of all the cast changes throughout the years.