WATCH: 'Big Bang' Cast Sings 'The Time Warp' for Alzheimer's

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On Wednesday, the cast of CBS’ hit comedy “The Big Bang Theory” channeled their inner Broadway and musical talents to help raise money and awareness for the Alzheimer’s Association at the Beverly Hilton Hotel in Los Angeles.

The entire cast dressed up in full costume, makeup, fishnets, wigs and accessories as characters from “The Rocky Horror Picture Show”. As you can see from the above photo, Jim Parsons took center stage as Dr. Frank N. Furter. Fellow cast members also joined him onstage including Kaley Cuoco, Johnny Galecki, Simon Helberg, Melissa Rauch, Mayim Bialik and Kunal Nayyar.

“None of us sing very well, and it’s never necessarily good what we do, but like a train wreck you can’t take your eyes off it, so there’s the attention,” Parsons said.

This isn’t the first time the cast has performed at the annual “A Night at Sardi’s,” which brings attention to Alzheimer’s.

“This is the fifth year we, as ‘The Big Bang’ cast, have come here to do a number to keep bringing attention to this cause,” Parsons said. “There is no cure yet and it’s just very important to keep attention on it until there is one.”

Other celebs also took the stage like Emmy Rossum, Zachary Levi, Jason Alexander and Steven Weber. Jason Bateman hosted the event.

So far, “A Night at Sardi’s” has raised more than $21 million for Alzheimer’s.