Clay Aiken, Lance Bass and Wanda Sykes will guest star in an episode of cabler Lifetime's Drop Dead Diva inspired by Constance McMillen's real life story.

McMillen is the lesbian high school student who last year sued her Mississippi school board after officials canceled the annual prom dance rather than allow her to attend with her girlfriend.

She was awarded $35,000 in damages plus attorneys' fees and the board agreed to adopt a policy prohibiting discrimination based on sexual orientation.

The teen has said that her family's support helped her get through the ordeal.

McMillen's brush with discrimination is the inspiration behind Drop Dead Diva's upcoming episode titled The Prom, lesbian entertainment website reported.

In the episode, attorney Jane (played by Brooke Elliott) takes action against a school system that won't let two girls attend prom together. A preview of the episode shows Sykes playing a sassy judge and a brief cameo by McMillen as a guard.

The Prom airs this Sunday on Lifetime at 9PM.