I guess I called it wrong when I said the Best Dressed of The Week poll would be dominated by Marion Cotillard and Cameron Diaz, because Megan Fox and Blake Lively were neck and neck this weekend.

Blake Lively wowed in a stunning backless Cavalli white dress, with black Manolo Blahnik studded heels whilst giving us her signature head tilted pose.

Some of you were so shocked when she took the lead, that I was asked if fan sites had linked to the poll. They hadn’t, so it was clear many of you simply loved her in this dress.

Marion was my pick as she is the only person that really wowed me this week.

She was head-to-toe perfection wearing Elie Saab and Jimmy Choo, whilst exuding air of sophistication which eludes so-called stars - Phoebe Price, Bai Ling - on the red carpet.

Credit: Wireimage

The last time I remember Marion Cotillard wearing something other than Christian Dior was as the 2008 Oscars, when she wore a Jean Paul Gaultier gown.

Last night Marion continued to promote her new movie “Public Enemies” with co-star Johnny Depp, at the LA Film Festival.

She arrived wearing a stunning figure hugging multi-coloured mosaic patterned Elie Saab Fall 2009 day dress with a cowl-neck and padded shoulders.

She oozed that chic sophistication that just makes her the breath-taking star that she is.

Her hair was styled in a classic beehive updo, and she completed her look with silver Jimmy Choo satin peep-toes and a blue python clutch from the same Elie Saab Fall 2009 collection.

J’Adore.

Credit: Style.com & Wireimage

Hopings Got Talent Fundraising Event, London

Lily Allen looked outstanding wearing a prom-esqe red Prada dress, teamed with taupe Fendi bow-front peep-toes, and a blue quilted Chanel bag. One of many that she owns.

Her make-up was flawless, I love the a pop red on her lips, and I adore her neat black bob.

Surprisingly well put together.

Sienna Miller tried her hand at a glam rock chick look by teaming a studded Temperley London cropped jacket, a studded vest and a studded Temperley London belt with faded black skinny jeans and studded ankle boots.

I glad Sienna has managed wear a casual look that doesn’t include a hint of boho, but she has over done things with the studded details. At this point I wouldn’t be surprised if she was wearing studded pants.

Her look was completed with a Romanek crocodile clutch.

“Public Enemies” Chicago Premiere

French actress Marion Cotillard wore a very summery lilac strapless Christian Dior dress which she paired with silver open-toe heels and a double buckle belt.

A curly opdo and a brown clutch completed this stunning look.

Sam Fine’s “The Basics of Beauty” DVD Launch Party, New York

Without a single hair out of place Iman stepped a little out of her comfort-zone of glamorous gowns and tea dresses, to wear this black shimmering Derek Lam Spring 2009 jumpsuit with harem pants.

Divine as always.

2009 Los Angeles Film Festival’s Opening Night Premiere Of “Paper Man”

Christina Ricci kept her look simple wearing a purple dress with a black elasticated waist.

White pointy pumps and a quilted Chanel bag completed the look, but Christina opted out of wearing a bra.

Grand Opening Of The New BOA Steakhouse In West Hollywood, LA

Looking fabulous is really easy for Terri Seymour as the former model has a stunning figure.

Whether she’s wearing a designer gown or this strapless floral Topshop dress, it’s almost impossible for her to have an off day.

She completed her look with YSL Trib Two slingbacks.

8th Annual Four Seasons Of Hope Gala, New York

I feels like something is missing from Estelle’s Rachel Roy Pre-Fall 2009 black jumpsuit.

She has a pop of colour via the purple pumps, but I’m still missing something.

Barnes & Noble Book Signing, New York

Lauren Conrad opts for a cute casual style for her New York book signing at Barnes & Noble.

The star wore a very similar look to her last book signing.  Her she wore a loose fitting black and white top with black shorts and black Christian Louboutin pumps.

Wavy hair, a single bracelet and a megawatt smile completed the look.

Credit: Style.com, Rex Features & Wireimage

Marion Cotillard opted for a very sophisticated classic look for this event. She looked every inch hte A List movie star that she is, wearing a dove grey Christian Dior skirt suit.

The cap sleeved jacket was belted to clinch in her waist, and give her a stunning silhouette.

Her lady-like look was contrasted with a pair of Christian Dior Spring 2009 tribal heels, with a African fertility goddess figurine as the heel.

Hilary Duff also opted for a sophisticated lady-like look with edgy heels, wearing a gingham belted dress, with Manolo Blahnik ‘Vella’ peep-toe ankle booties.

Unfortunately for her she’s so overshadowed by Marion’s magnifique chic.

Love her bright red clutch.

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Creating a sensation at the charity benefit, Diane Kruger looked outstanding in a white Chanel Spring 2009 Couture ensemble.

For me it doesn’t have the same impact as her Marchesa gown, which made my heart melt, but she still looks amazing.

I love the square shouldered cropped jacket, the cute black bow - which we know she loves - and the interesting shaped skirt, which reveals a lace lining.

A bejeweled clutch and Louboutin’s complete the look.

With so many great dresses this week, would it be fair to include both Diane’s looks in Best Dressed of the Week?

Only Dita von Teese can get away with wearing a Jean Paul Gaultier Spring 2009 Couture dress, with a transparent skirt, revealing her garter.

That’s because she oozes class and chic sophistication. I’m much more inspired by her in this dress, than her previous Dior Couture dress.

I love Marion Cotillard, and her association with Dior is a match made in heaven, but I would have loved something more dramatic from her.

Her pale blue Christian Dior Fall 2009 embroidered gown is gorgeous, as it brightens up her complexion.

You know saying, “Take one thing off before you leave the house”?

Well Paris Hilton should have taken off 3. The headband, the necklace and the bracelet.

Her Basil Soda Spring 2009 Couture gown is already dripping with embellishments around the waist, that she needn’t have over cooked it.

This gown is quite dark and dramatic for Paris. I’m surprised she didn’t pick something more sugary.

Donatella Versace’s modification on her Versace Fall 2009 cornflower blue gown are very subtle.

I prefer her softer blue strapless gown. The bodice is longer, plus it has a fuller skirt.

I’m a constant admirer of how immaculate she always looks.

Michelle Yeoh opted for a purple satin Atelier Versace Fall 2008 gown, with ruffled details on the shoulders, and an open back.

She kept her jewelery minimal, with a few diamonds on the bracelet and earrings.

All my diva’s are going red. First Coco Rocha, now Eva Green. Is red the new black?

I’ve love Eva since she first stepped on the red carpet. She’s such a daredevil when it come to fashion. But on this occasion not so much.

Don’t get me wrong, I love her fuschia pink Christian Dior Fall 2009 Indian inspired gown, with intricate embroidered details, but if ever their was someone to wear one of Dior’s Spring 2009 Couture ball gowns on the red carpet, this was our girl.

Elsa Pataky’s Armani Privé Fall 2008 black and white striped strapless gown, may look a bit tame from the front, but that’s because all the drama is at the back, as it gathers, then falls to a fishtail hem.

There would have been no prizes for guessing that Eva Herzigova would wear Dolce & Gabbana to this event. Much like her supermodel chum Claudia Schiffer.

Her Spring 2009 corseted red dress, had more sass than the runway version. Hers was strapless and shorter, to show off those impossibly long legs.

As much as Lily Cole is wearing a beautiful Emilio Pucci Fall 2009 strapless gown, she fails to excite.

Many of you have remarked that you would love for Georgina Chapman to modify her gowns, to make herself more individual, and stand out from the runway and her clients, like Donatella Versace.

Unfortunately she didn’t hear your pleas on this occasion, because she wore a gold lame Marchesa Spring 2009 asymmetrical gown, as it was presented on the runway, plus the gold Louboutin’s.

Whatever the weather, she always looks outstanding, and here is no exception.

It feels strange calling anything by Chanel casual, but Anna Mouglalis’ blood red Chanel Cruise 2010 satin dress, feels too casual for such an event.

Kudos to her for wearing a piece from this collection, which was only presented last Thursday.

Margherita Missoni represented her family brand in the way she always does, with style and grace.

Her lurex silvery blue Missoni Spring 2009 gown, with a gold waistband, is a modification of the strapless jumpsuit which was presented on the runway.

Her added gold jewelery, and a matching mini clutch were the perfect touches for added glamour.

L’Oreal girl Kerry Washington takes the baton for the final leg of Cannes Film Festival, after Elizabeth Banks, Aishwarya Rai, Eva Longoria, and Evangeline Lilly before represented the brand before her.

Kerry a vision, as always, wearing a strapless deco beaded Marchesa gown, with a gold Bally box clutch.

Hayden Panettiere arrived at this event wearing a gorgeous blush silk chiffon Marchesa dress with similar silver embroidered details to Diane Kruger’s Marchesa gown.

I love the dress, but even in this picture, it feels like the falling train is in the way.

Prior to this event, you would have seen Hayden sunbathing on a yacht, relaxing with friends and topping up her tan. Unfortunately it left unsightly tan lines.

I’m loving the vacation glow, but a hint of lippy would have worked wonders.

Zoe Saldana opted for a nude dress with a gathered detail on the hip, whilst she paired her look with copper accessories.

Sharon Stone has never looked better, but next time she should consider tanning her legs, before opting for a thigh high split. Her arm appears to be a different shade to her legs.

Despite all that the annual host for this event look magnificent wearing an asymmetrical Dior gown, with silver strappy Dior heels.

Claudia Schiffer stays faithful to her boys Dolce & Gabbana, wearing this tulle black bustier gown.

You’ll be happy to see that she’s keeping the bangs for now.

Zhang Ziyi’s ethereal nude gown is so delicious on her. The colour is exquisite, complimenting her skin tone.

Her hair was pulled back off her face to reveal a long earring, and a diamond stud. How very 80s Janet Jackson.

I’m not quite getting the wow factor from Carine Roitfeld, which I got last year, but she still looks fantastic wearing this white Givenchy Couture gown.

I’m wondering has anyone ever seen her with her hair up?

Rinko Kikuchi wears a grey ruffled Chanel Fall 2008 Couture dress, with really heavy clunky heels.

Shu Qi wears my least favourite gown of her Cannes experience.

All good runs come to a crashing end. Case in point Robin Wright Penn in this charcoal spaghetti strapped gown.

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British TV presenter Myleene Klass maybe the least known at this event, but she was by far the best dressed, wearing a nude strapless Jasper Conran Fall 2009 dress, with a organza floral detail on the skirt.

After Kirsty Gallacher let me down last week, Myleene is fast becoming my favourite Brit on the red carpet.

Nude Louboutin’s complete the look.

Peaches Geldof scrubs up well when she puts in the effort.

On this occasion she wore a white Paule Ka Fall 2009 bustier gown, with a black bow belt, which had white stitching.

She could have opted for different shoes from her previous party, but all in all, another good look for her, minus the tattoos.

Red Casadei heels, and an embellished Bulgari clutch complete the look.

Asia Argento shows off her Chopard bling, whilst wearing a black elegant Chanel gown.

Eva Herzigova wore a black strapless Roberto Cavalli dress which had cut-out details on the bodice, and a tulle poufy skirt, with Giuseppe Zanotti Special Edition crystal strap sandals in black.

She wore the silver version to the Costume Institute Gala.

Marion Cotillard’s look is simply elegant, but at the same time a little boring in this Lanvin strapless dress.

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“Antichrist” Premiere

Charlotte Gainsbourg walked the red carpet at her movie premiere last night, looking stunning in a black and white splash print Balenciaga dress, with black strappy Balenciaga heels.

It may not be what you would expect to see on the Cannes red carpet, but this is very much Charlotte’s style, plus she is good friends with the designer Nicolas Ghesquière.

You can give a girl a pretty dress, expensive jewels and lessons on how to pose on the red carpet, but you can’t give her charisma, and Rosanna Arquette has that by the bucket load.

Like Kate Hudson she has a magnetism that draws you in, and I adore her cowl back gold sequin gown.

She’s just oozing sex appeal.

The Weinstein Company Celebrates NINE in Cannes

Marion Cotillard should have worn the runway belt with her Lanvin Spring 2009 dress. Her dress has no shape without it.

Yves Saint Laurent cage ankle boots complete her all black look.

Quintessentially Hosts Party for Nowhere Boy At la plage

With t-bar Christian Louboutin heels, Georgina Chapman wore her own black and gold Marchesa embroidered silk dress, with a draped chiffon overlay.

Both Miley Cyrus, and Heidi Klum have worn this stunning piece.

“A Night of Hollywood Domino”

I could have loved Paris Hilton in her silver sequin strapless Zuhair Murad Spring 2009 cocktail dress, with a dramatic bow front, as it looks soooo gorgeous on the runway.

The problem for me is that Paris over did the accessories.

The accessories are competing with the dress, and the dress should stand alone.

Lily Cole already has incredibly long legs, so it beggars belief why she wore nude heels to elongate her legs even further.

Lily wears the now well worn Alberta Ferretti Spring 2009 taupe flapper dress.

Penelope Cruz wore an ivory John Richmond gown, with silver embellishments. I really wish she had removed her satin Balmain jacket for this photo. I’m dying to see the rest of the dress.

Olivia Palermo leaves me in despair as to why she wore YSL tribute sandals in black, with a pretty floral dress. She works in fashion right?

Malin Ackerman wore a bubble gum pink Versace dress, which has to be one of the most uninspired gowns I have seen at Cannes.

Peaches Geldof went head to toe red, wearing a red satin Dolce & Gabbana strapless bustier dress.

For once I like this look.

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