Has Rachel McAdams gone grey?

Rachel McAdams dazzled on the red carpet in LA last night for the premiere of the Sherlock Holmes sequel, A Game of Shadows.

rachel-mcadamsRachel McAdams at the Sherlock Holmes premiere. Photo: PA

The actress made heads turn in a silver Marchesa gown that also happened to be backless, sequin embellished and very, very slinky. However, despite the show-stoppper of a dress, we can't help but notice the grey streaks of hair in her scraped back, messy updo.

rachel-mcadamsRachel hits the red carpet. Photo: PA

Is she going grey early or did she simply want to match her hair with her dress? Either way, she definitely makes grey hair look glam.

Let us know how you rate Rachel's style and take a look below to see which other celebs have been changing their hair colour recently.