The "American Hustle" vibe may have reached McKinley High's hallways.

On Thursday, Jan. 30, Lea Michele tweeted a photo of her and former 'Glee' co-star Dianna Agron channeling '80s glam with a red mullet dress for Dianna and a crop top and high slit maxi skirt for Lea.

"Early 80's glam at #Glee today with @DiannaAgron," Lea tweets as a caption for the photo.

Dianna responds to the tweet with "Want to dress like this every day."

Lea also posts two more photos of herself wearing the same retro outfit, one with the caption, "Channeling my inner American Hustle," and the other with the hashtag "#Disco #Glee".

She finally posts a photo of her and some of the 'Glee' cast, including Dianna, Matthew Morrison, and Mark Salling, while having dinner along with the caption, "So thankful for my amazing glee family. I love them so much."

That same day, Darren Criss also expresses his joy over reuniting with the past and present cast members during the filming, saying "Today was one of the best days on #Glee. Ever. @msleamichele @DiannaAgron @chriscolfer @MarkSalling @iharryshum @Matt_Morrison @MrRPMurphy."

All the photos and tweets are taken and posted during the filming of 'Glee's' much-anticipated 100th episode, which reunites all the past and present members of New Directions.

Last year, show creator Ryan Murphy announced that he sent invitations to some of the former 'Glee' cast to appear in the series' 100th episode. Over the month of December, RSVP's are slowly coming in, and former cast members such as Heather Morris, Dianna Agron, Gwyneth Paltrow and Kristen Chenoweth confirmed their attendance.

Heather signals her first appearance since giving birth to her son Elijah last September, while Dianna silenced the rumors of an alleged rift between her and the rest of the 'Glee' cast with her confirmed appearance in the show's 100th episode.