It takes two.

[prillalar]

I've been thinking about identical twins in literature and I decided to make a list. There's no real point to it, except that I think there's a higher than usual number of redheads among them.

Tom and Pat Bartlett
Time For the Stars by Robert Heinlein
Hair: Not sure, but not red

Castor and Pollux Stone
The Rolling Stones by Robert Heinlein
Hair: Red, I believe

Sandy and Dennys Murray
A Wrinkle in Time interalia by Madeleine L'Engle
Hair: No idea. In fact, I'm not even sure they're identical.

Elladan and Elrohir, sons of Elrond
Lord of the Rings by JRR Tolkien
Hair: Dark

Brent and Stuart Tarleton
Gone With the Wind by Margaret Mitchell
Hair: Red

Fred and George Weasley
Harry Potter books by JK Rowling
Hair: Red

Jessica and Elizabeth Wakefield
Sweet Valley High sort of by Francine Pascal
Hair: Blonde
And they were the only girls I could think of.

Who did I miss? Looking for identical twins here, so please don't bring up the Bobbsey Twins.

[Edited to correct spelling of "Bobbsey"]
[Edited again to correct factual error that nobody called me on]