Dianna Agron
(© Fox Broadcasting Co./Danielle Levitt)
Dianna Agron
(© Fox Broadcasting Co./Danielle Levitt)
Glee stars Dianna Agron and Grant Gustin have been added to the roster of guest mentors for the Oxygen Network reality series, The Glee Project, according to The Hollywood Reporter. The show features 14 contestants, with the winner receiving a seven-episode arc on the fourth season of Glee.

Gustin, whose credits include the national tour of West Side Story, plays Dalton Academy Warbler Sebastian on the FOX series and will take part in the July 17 episode of the Oxygen competition. Agron, who plays Quinn, is slated to appear on the August 7 episode of the series.

As previously reported, other guest mentors on The Glee Project this season are Chris Colfer, Darren Criss, Samuel Larsen, Jane Lynch, Lea Michele, Cory Monteith, Amber Riley, and Naya Rivera.

Click here for more information about The Glee Project.