Heather Morris Returning For 100th Episode of 'Glee'

That sound you hear is the sound of Brittana fans everywhere freaking out.

We previously reported that Glee creator Ryan Murphy had extended invites to everyone in the cast to return for the series' 100th episode.

We can now say that Heather Morris is officially on board! Heather had left the show last season after becoming pregnant with her first child.

Heather joins previously departed cast members Amber Riley, Harry Shum and Mark Salling that are confirmed for the episode.

Ryan also tweeted that Kristin Chenoweth will be appearing in the episode. That's a blast from the past.

The 100th episode of Glee is set to air March 18th at 8/7c on FOX.

Update: It was just confirmed that Dianna Agron is confirmed for the episode as well.