Lucifer's musical episode is already pulling in some big guest stars.

According to Entertainment Weekly, singer-songwriter Debbie Gibson will appear in the episode, which is titled "Bloody Celestial Karaoke Jam." She will play Shelly Bitner, "a controlling helicopter mother who won’t let her teenage son JJ have any say in his own future."

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Gibson is, perhaps, best known for hits like "Foolish Beats" and "Lost in Your Eyes." However, she is no stranger to acting. She appeared on Broadway as Eponine in Les Miserables and as Sandy in Grease. Her film credits include My Boyfriend's Girlfriend and Rock of Ages, while she has appeared on TV shows like Beverly Hills 90210.

The musical episode won't be Lucifer only gimmick this year. Season 5 also boasts a 1940s noir episode, which will contain some song performances as well. Additionally, Netflix just cast 24 alum Dennis Haysbert to play God in the final season.

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After Netflix saved Lucifer from cancellation hell, the character found new life on the streaming service -- and finally made his way over to the Arrowverse. During the "Crisis on Infinite Earths" crossover, he repaid a favor he owned John Constantine and helped the beleaguered heroes go to purgatory, where they tracked down Oliver Queen's soul.

Helmed by Joe Henderson and Ildy Modrovich, Lucifer Season 4 stars Tom Ellis as the Devil, Lauren German as Det. Chloe Decker, D.B. Woodside as Amenadiel, Rachael Harris as Dr. Linda Martin, Kevin Alejandro as Det. Dan Espinoza, Lesley-Ann Brandt as Mazikeen Smith and Aimee Garcia as Ella Lopez. Season 5 is slated to premiere on Netflix in 2020.

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