It's in like Quinn! After being noticeably absent for much of Season 5 of 'Glee,' including the Cory Monteith tribute episode, Dianna Agron will return to the series as Quinn Fabray for the 100th episode.

Show runner Ryan Murphy tweeted the news:

So did the gorgeous blonde actress:

Agron had tweeted a tease that good news was coming. She wasn't kidding!

She has not been seen or heard on the show since the 14th episode of Season 4, and Gleeks were shocked that she didn't come back for the Monteith memorial, since his Finn Hudson and her Quinn had an intertwined storyline for so long.

All original 'Glee' cast members were invited back for the landmark 100th ep, which is set to air on March 18. Also accepting their invites were Heather Morris, Mark Salling, Amber Rilery and Harry Shum.

Fans and Gleeks are selecting the 10 most beloved songs from the show's history which will be "remixed."