'Glee' Gets To Work On Reunion Ep: See Heather Morris, Chace Crawford Hit The Set

Familiar faces are currently shooting the 100th episode of 'Glee.'

Lea Michele is back to work on "Glee" and some familiar faces are joining her on set. The cast is currently shooting the 100th episode of the series and the "Cannonball" singer shared with her fans a photo featuring some of the shenanigans happening behind the scenes.

The photo includes Michele (Rachel Berry) and fellow Gleeks Jenna Ushkowitz (Tina) and Heather Morris (Brittany S. Pierce) who stepped away from the show last season to have a baby.

"Love these ladies! @JennaUshkowitz and #Hemo! So nice to have Heather back! #glee100thepisode," Michele wrote about the reunion, which, from the looks of Morris' funny face, must feel pretty good.

Morris is one of the many familiar faces set to appear on the show's 100th episode, airing in two parts this March. Joining her will be Dianna Agron (Quinn), Harry Shum Jr. (Mike), Amber Riley (Mercedes) and Mark Salling (Puck). A few featured players will also be making comebacks, including Gwyneth Paltrow and Kristin Chenoweth.

Joining the show for the first time is former "Gossip Girl" star Chace Crawford, who has been tapped to play a love interest for Agron's character. Matthew Morrison teased, "His name is Biff. He's kind of a Yalie degenerate." Crawford was pictured on set earlier this week alongside Agron and Salling. And, he was looking rather preppy and polished.

Salling also shared a picture from the set, where he was having a blast alongside Darren Criss. Salling tweeted out a picture of a jam session they had while shooting.

The two-part episode, which will include remixes of tracks that previously appeared on the show, airs March 18 and March 25.