Glee star Naya Rivera posted a risqué photo on her Instagram account Wednesday, featuring the star in her underwear on the set of the show.

Rivera, who plays Santana Lopez on the Fox musical series, posted a photo of herself presumably filming a scene for the show's 100th episode on Instagram. The actress is seen sitting on a chair with only her bra, panties, high heeled boots and a band leader hat. Rivera captioned the photo with a simple "#Glee100."

The actress posted a similar photo on Jan. 21, presumably from the same scene.

Glee's 100th episode will be a special episode of the show, with almost every cast member and significant guest star who has ever been on the show returning.

The episode features the show's large cast of characters singing iconic Glee songs from the show's five seasons. The songs will be remixed and sung by different characters than the ones who originally sang them. The songs were voted on by Glee fans from a preselected list.

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Rivera previously revealed on her Twitter account that there would be a reunion of the "Unholy Trinity," a.k.a. Santana, Brittany (Heather Morris) and Quinn (Dianna Agron) in the 100the episode. The Unholy Trinity last appeared together in the same scene in the season 4 episode I Do.

The 100th episode of Glee airs March 18.

Glee Season 5 Spoilers: Gwyneth Paltrow and Gossip Girl Star to Appear on 100th Episode

Glee season 5 returns for its midseason premiere on Tuesday, Feb. 25 at 8 p.m. on Fox.

Watch the trailer for the next episode of Glee here:

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