Ashley Olsen brunette hair

Ashley Olsen steps out with newly dyed brown locks. Photo: Olsen Anonymous

Ashley Olsen has come over to the dark side.

The 24-year-old fashionista was spotted just a few days ago with her signature blonde hair and visibly dark roots. But now she's showing off a more sultry look with rich, chocolate brown locks.

Dressed in a black blazer, bright white scarf, stacked bracelets, and a Fendi croc handbag, this trendy twin joins another Hollywood celeb -- Jessica Biel -- in making a statement for fall with a darker 'do.

And who can blame them? They look fabulous.

No doubt Olsen knows how to pull off the brunette look -- just look at those bright red lips! And we are especially glad that she is emerging into a more sophisticated style.

Do you remember the extreme neon-dyed tresses she rocked over the summer?

Are you considering going darker with your hair this season? Leave a comment below telling us what you think of this Olsen sister's new hair color.

Check out these hair tips on getting bolder with your locks.