Joss Whedon, recently hired as writer/director of the upcoming "Wonder Woman" movie, told TV Guide Online that he is months away from selecting the actress to play the lead character, according to SciFi Wire.

"Everybody is in agreement that casting is not an issue right now," Whedon said. "It's not a vehicle to be built around a particular star.

"We want to write the thing, find the right character and then figure out who should play her. There are various famous people whose names have come up because that always happens. However, we're talking about Wonder Woman here. Those are tough booties to fill."

Whedon did reveal one characteristic he will be seeking in the lead actress when the time for casting arrives.

"I think we will go a little younger than the traditional idea of Wonder Woman," that is, someone in her 20s, he said.

As for hiring any actresses from Whedon's previous series like "Buffy the Vampire Slayer," "Angel" or "Firefly," Whedon simply responded that it is a "movie, not a party for my friends."