Read that Universal had a cow when they heard that director Robert Rodriguez tapped his girlfriend Rose McGowan to be Barbarella. So they dropped the movie!
Heck, I'd have a cow, too, considering McGowan was the star of Grindhouse. And how much did that movie make?! Not too much. And keep in mind, it was a good movie! If Rose McGowan can't carry a flick like that, how the heck do you expect her to carry Barbarella?
I dunno. They need some big name if they are going to do this thing right. Otherwise it's gonna flop.
My advice -- get Kate or Sienna. And when you do finally make the flick, make sure she gets naked.
(Shouldn't be too hard to convince Sienna to strip. Kate, I dunno.)