Carey Mulligan and Michelle Williams. Photos: Rex Features/PA
As for Williams, she's having something of a beauty moment. She has been glowing on the red carpet recently, and her radiant look at the Beauty and Brilliance event was no exception. Her darker hair colour looked stunning with the rose pink lip colour and dewy complexion. We also admire the way she makes a blunt, boy crop look oh-so-feminine.
In fact, we think we might have found ourselves a winner.
How do you rate the leading ladies' looks? Let us know by voting in the poll and take a look below to see more celebrity crops.
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- Carey Mulligan<p> Whether she's blonde or brunette, Carey Mulligan is the reigning queen of the modern day crop. She sported the sweeping fringe style at the <em>Drive</em> photocall at Comic Con 2011.</p>

- Demi Moore<p> Back in the 1990s, Demi Moore was <em>the</em> icon for the crop haircut. She sported her shorter do at the premiere of <em>Destination Anywhere </em>in 1997<em>. </em>Will<em> </em>she ever go back to her old style? It would be good to see her try something different...</p>

- Emma Watson<p> Emma Watson shed her Hermione Granger image when she first went for the chop. Her chestnut brown do looked gorgeous (and very grown-up) at the final <em>Harry Potter</em> premiere.</p>

- Ginnifer Goodwin<p> This choppy crop looked super cute on Ginnifer Goodwin during the <em>Once Upon A Time</em> press tour.</p>

- Kate Moss<p> Let's face it, Kate Moss could have any haircut and still look amazing. She looked radiant with a short do at the British Fashion Awards in 2001.</p>

- Mia Farrow<p> Mia Farrow joins Twiggy as one of the ultimate beauty icons. No one has pulled off the boy crop quite like her.</p>

- Michelle Williams<p> Williams' sleek, bleached blonde do complements her delicate features perfectly. We love this look on the star.</p>

- Rihanna<p> Rihanna is the current queen of edgy hairstyles. Who else can rock cherry red locks like her? She matched her slick crop with her lipstick at the 2010 Capital FM Summertime Ball.</p>

- Sharon Stone<p> Ever the blonde bombshell, Sharon Stone looked gorgeous at the 2009 Baftas. Her curly crop is an elegant alternative to a chic, red carpet updo.</p>

- Sienna Miller<p> Sienna Miller can never look bad, and while she's famous for her longer locks, the actress tried out the crop style for a brief spell in 2005. Knock out? We think so.</p>

- Tilda Swinton<p> Tilda Swinton sported her trademark androgynous style at the premiere of <em>We Need To Talk About Kevin</em> at Cannes Film Festival.</p>

- Twiggy<p> Twiggy might have been the face of fashion in the 60s, but her cropped blonde locks played a part in making her one of the biggest beauty icons of the era.</p>

- Victoria Beckham<p> VB debuted her spiky pixie crop back in 2008. The shorter style looked fab on the star when she launched her new jeans collection in Germany.</p>

- Agyness Deyn<p> Famous for her blonde boy crop, Agyness Deyn sported an updated version of the style at the French Connection fashion launch party in Hollywood, March 2011. The textured fringe gives the crop a quirky edge.</p>

