Rita Ora's 50 Shades Of Grey Makeover Is Quite A Surprise...

Rita Ora has already had one major hair makeover this week. And now it's time for another, as the first picture of her playing Mia in the upcoming 50 Shades Of Grey movie has been released.

It's safe to say Rita has one of those faces that can pull off a whole range of hairstyles that most of us definitely couldn't. Slicked back origami bun? Purple dip-dye? Been there, done that.

And just as we were recovering from her new icy blue X Men locks, which she unveiled earlier this week, she's now gone and joined the bob brigade.

In a new promo shot released on Facebook by the 50 Shades producers, the Black Widow singer is seen in her role as Mia Grey (Christian's sister) rocking a '20s-style bobbed brunette wig with bangs.

Working pared down make-up – a pale red lip and drawn in brows – and a pretty sleeveless tea dress, Rita is virtually unrecognisable without her signature blonde bombshell tresses and high-impact lippy.

What do we think?

While we've already seen the super steamy trailer for the highly-anticipated book adaptation, it sounds like we shouldn't expect much sauce from Ms Ora.

The singer told Fuse TV earlier this year that she won't be 'the most sexual in this movie.'

'I mean, it's to save your own eyes, really!' she added. 'It's an amazing honour to be part of such a huge movement. I'm super-excited; I'm going to go to the movies and watch it when it comes out!'

The 50 Shades Of Grey movie will be released in February 2015.