It's Sheldon in drag! Big Bang Theory's Jim Parsons wears fishnet tights to perform Rocky Horror song with cast



He's famous for playing uptight and geeky Sheldon Cooper on American sitcom The Big Bang Theory.

But Jim Parson played a scientist of a different kind on Wednesday as he took part in a stage musical for charity.

The 39-year-old actor wore black lingerie with a curly wig and fishnet stockings held up by suspenders while backstage at the 21st Annual A Night at Sardi's to benefit the Alzheimer's Association.

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In costume: Jim Parsons, left, and Kaley Cuoco posed on stage at the 21st Annual A Night at Sardi's to benefit the Alzheimer's Association at the Beverly Hilton Hotel on Wednesday

Run for her money: He wore fishnet stocking and suspenders with a bustier while she donned a maid's dress

Like ladies: Actors Steven Weber, left, and Jim both explored their feminine sides

In the spirit of things: Johnny Galecki, a guest, and actors Kaley Cuoco, Kunal Nayyar and Linda Hart perform on stage

Let's do the Time Warp: The group gathered together to do a dance for the Best of Broadway celebration In character: Mayim Bialik, left, and Simon Helberg dressed up for The Rocky Horror show track

After stealing the show with their rendition of Time Warp they took snaps with other famous faces contributing to the cause.

Kaley was spotted with actress and musician Emmy Rossum while Jim posed with actor Steven Weber.

Prior to taking part in The Best of Broadway production, the cast appeared in the photo area in their most glamorous get up.

Red carpet glamour: Actors Kaley Cuoco and Johnny Galecki posed together before the event

On-screen family: Kunal Nayyar, Melissa Rauch, Jim Parsons, Mayim Bialik and Mitch Hurwitz looked far from their appearances on stage and TV