Cheyenne Jackson and Charice are also set to return to the episode — entitled "Night of Neglect" — as Dustin Goolsby and Sunshine Corazon, respectively. Jackson acts as coach to Charice's character on New Directions' rival glee club, Vocal Adrenaline.
Stephen Tobolowsky will return as Sandy Ryerson, the former director of the McKinley High glee club.
Fox has yet to release official details of the episode, but "Night of Neglect" is expected to feature solo songs by the ladies.
Jackson has appeared on Broadway in Finian's Rainbow, Xanadu, All Shook Up, Thoroughly Modern Millie and Aida. Tobolowsky was seen on Broadway in Morning's at Seven and The Wake of Jamey Foster. Paltrow recently teamed up with "Glee" leading man Matthew Morrison for a duet on his upcoming self-titled solo album that is due May 10. The two sing "Over the Rainbow."
"Glee" airs on Fox Tuesdays at 8 PM ET.
