I like her better as a blonde.

The dark hair totally washes her out.

Unfair! bad brunette picture!

Blonde!

Love her as a blonde.

Myabe light brown with suttle hilites.

of course a better cut might help in both instances! but i think blonde or blonde highlights at least

she looks totally different in both. I think she looks more approachable (and smarter) in brown. But older too

Neither one, really.

The dark hair makes her teeth look bad.

I chose undecided because I just don't like her, I don't know why, I just don't (it's the same with Beyonce, I don't like her either). They just give me bad feeling when I see them but that's just me.

blonde!

Dark hair doesn't match her complexion. Or maybe the pix is very bad?

i don't like that shade of mousy brown in that picture at all. if it were darker with some nice highlights it might be a different vote.

The blonde makes her look brighter all over.

I agree w/ Sarahab145. Not really a fair pic comparison. However, I still prefer her as a blonde.

She was born to be blonde haha - lets just put it that way!

i hate her equally, with or without the bleach.

I am not a Sienna fan, but she looks better as a blonde

Shes definitely better suited as a blonde.

Blonde

blonde. blonde blonde

How about "gone from my eyesight forever" i dont care what her hair looks like.

Blonde.

Blonde. I think she'd look really hot with dark brown hair though. It's just the light mousy color here that kills it.

She's a better blonde.

she's much better as a blonde

The way she looked when she was with Jude Law was the best she ever looked. She's gone down hill ever since.

She's fug. can't stand her

as a blonde!

I think she can pull off either with her skin tone, but the brown here isn't very shiny or nice... I think its a wig for a movie?

idk, in the pictures above, the brunette look brings her a more natural look. but in better pictures, she looks really bad as a brunette, sometimes even as a blonde. maybe she should try being a red head??

Blond. Yea, Sienna!