'Glee': Susan Sarandon game for 'Rocky Horror' tribute [UPDATE]

rocky-horror-barry-bostwick-susan-sarandon-320.jpg Susan Sarandon would go Gleek, but maybe not do the "Time Warp" again if it involved more singing.

The former "Rocky Horror Picture Show" star is open to guest starring on the "Glee" episode featuring a tribute to the cult classic, but she has one reservation.

"Depending on what they wanted me to do," she tells People. "I'm not really a singer, so I wouldn't be very out there. I'm a terrible singer. But I'm flattered they want to do it."

In the 1975 film, Sarandon plays Janet who's engaged to Brad (Barry Bostwick). The couple get stranded when their car breaks down and they find themselves at a nearby castle where a group of people are holding their Annual Transylvanian Convention. Sounds perfect -- perfectly outlandish for "Glee"!

We'd love to see her do the show, perhaps as visiting faculty. Even better, why not have her daughter Eva Amurri guest star as a student?

[ UPDATE: Bostwick, who plays Brad in "Rocky Horror" and Meat Loaf, who plays "Eddie, ex-delivery boy," have confirmed to E! that they're guest starring on the special "Glee" episode. They'll play station managers who have a proposal for Sue Sylvester.]

Would you like to see Sarandon back? How about Tim Curry?

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Photo credit: Twentieth Century Fox