Credit: Twitter

We're beyond excited to finally have Quinn (Dianna Agron) and Brittany (Heather Morris) back for Glee's 100th episode! And so we're thrilled to hear more about what they'll be doing in the episode, as it seems that we'll have plenty of Unholy Trinity shenanigans to look forward to. 

We've already gotten a report that Quinn, Brittany, and Santana (Naya Rivera) will be teaming up to sing "Toxic" in Season 5, Episode 12: "100." It now appears that the cast has just been filming a scene featuring those three lovely ladies.

On January 15, Glee cinematographer Joaquin Sedillo tweeted: 

Holy Unholy Trinity, indeed! We love the idea of the whole cast appearing in one jam-packed scene, including current New Directions members and the graduates. Maybe all the characters will be watching the Trinity perform its sexy song? 

Meanwhile, the Glee cast seems to enjoy having the whole gang back together. Here's what Dianna and fellow returnee Amber Riley (Mercedes) tweeted about the filming: 


And Lea Michele (Rachel) posted a photo (seen at the top) of herself goofing around on set with Jenna Ushkowitz (Tina) and Heather during a break from shooting. "Love these ladies! @JennaUshkowitz and #Hemo! So nice to have Heather back! #glee100thepisode," Lea captions the pic. And it's crazy how long new mom Heather's hair has gotten since we last saw her on the show!

What do you think the Unholy Trinity will be doing in this scene?

Sources: Lea on TwitterJoaquin on TwitterDianna on TwitterAmber on Twitter