Ladies in red, Emily Blunt and Cobie Smulders. Photos: Getty Images
Take a look below to read the verdicts, and don't forget to cast your vote in the poll below!
Get Lippie: Both utterly gorgeous with that irresistible dark hair/light eye combo, but Emily Blunt's use of warm taupe liner to make her eye colour pop, coupled with casually-tousled yet incredibly shiny hair just tips the edge for me. Sorry Cobie!
Makeup4All: I have a girl crush on Emily Blunt, not only she is a great actress, but she always looks gorgeous. Although I personally love brighter lip on her and cooler tones, this makeup looks stunning on her, too. The warm brown eye shadows make the blue eyes pop and the nude gloss, subtle peachy blush and groomed eye brows look amazing together. Emily's hair looks perfect, this retro inspired glossy hair style really suits her.
As for Cobie Smulders, she looks beautiful! I particularly love her eye brows, cheekbones and eye makeup. She could go for a brighter lip shade though and her hair style is not as fun as Emily's.
MyDaily verdict: This is possible the toughest call in the history of 'beauty look of the week'. We love Cobie's simple hair and makeup against her stunning Alexandra Vidal gown, but Emily's hair wins it for us.
Reader poll:
See more celebrity brunettes in our hair lookbook below:
- Angelina Jolie<p> Hollywood beauty Angelina Jolie kept her locks light and fresh at The Tourist premiere with some dark blonde lowlights, creating an overall soft-brown finish. She added drama with her signature feline eyes and some clever backcombing.</p>

- Anne Hathaway<p> Bride Wars star Anne Hathaway softened her chocolate-coloured hair with some soft amber highlights, which were beautifully enhanced by her apricot lips at the Love and Other Drugs premiere in New York.</p>

- Daisy Lowe<p> The MyDaily launch party saw a host of celebs come to celebrate with us – and we adored Daisy Lowe's soft eye-skimming fringe and tousled chocolate curls.</p>

- Kate Middleton<p> Kate Middleton's <span style="font-family: Helvetica, Arial, sans-serif; font-size: 14px; line-height: 17px; text-align: left; ">signature luscious locks were curled and polished, and her make-up was flawless when attending <em>War Horse</em> premiere.</span></p>

- Katie Holmes<p> This might be one of our all-time favourite Katie Holmes hairstyles! From the warm red undertones and high-shine glamour, to the big bouncy curls, we fell head over heels for this look, which she showed off at the Golden Globe Awards in 2010.</p>

- Kelly Brook<p> Curl power! Kelly Brook may well be one of the most glamorous brunettes in our round-up. And she was on sparkling form as ever when she stepped out at the Prince's Trust Rock Gala in 2010 with pumped-up tendrils showing a hint of a reddish glow. Love the matching peachy lips.</p>

- Kiera Knightley<p> At the Rome International Film Festival, Keira Knightley's face-framing mid-brown bob was the perfect colour-match for her deep brown eyes, while the loose kinks worked to soften her beautifully angular features.</p>

- Kylie Minogue<p> </p> <p> Kylie Minogue and her<span style="font-family: Helvetica, Arial, sans-serif; font-size: 14px; line-height: 17px; text-align: left; "> glossy chocolate brown locks at the <em>Cosmo Women of the year Awards.</em></span></p>

- Mila Kunis<p> </p> <p> <span style="font-family: Helvetica, Arial, sans-serif; font-size: 14px; line-height: 17px; text-align: left; ">Mila's makeup complimented her honey toned low-lights perfectly and there was no denying that the star looked gorgeous at a </span><span style="font-family: Helvetica, Arial, sans-serif; line-height: 18px; text-align: left; ">children's research hospital benefit gala.</span></p>

- Olivia Wilde<p> </p> <p> <span style="font-family: Helvetica, Arial, sans-serif; font-size: 14px; line-height: 17px; text-align: left; ">The actress swapped her long auburn locks for a</span><span style="font-family: Helvetica, Arial, sans-serif; font-size: 14px; line-height: 17px; text-align: left; "> shorter, two-tone waves hairstyle. </span></p>

- Rachel Bilson<p> Rachel Bilson was one of the first celebrities to channel the two-tone trend. The stunning actress's long layers went from mahogany to blonde-brown, and finished with a slight – yet body-building – curl. Gorgeous.</p>

