We had to do a double take when we spotted Sienna Miller's hair on the red carpet at the British Fashion Awards. Has the actress dyed her hair a subtle shade of pink? It seems so, but it Sienna chose an interesting part of her hair to highlight. Instead of all-over color or an ombré effect, Sienna dyed only the front midsection of her hair with a subtle rose gold hue. We've seen this look on her before, though. Back in 2011, Sienna stepped out sporting pink hair during a trip to Ibiza with Tom Sturridge. Clearly she knows what she likes, but are you a fan of her pink hair?