Happy birthday, Kate!

As the Duchess of Cambridge turns 31 today, we celebrate 31 of her looks that dazzled the world

Whatever the Duchess of Cambridge wears turns to gold.

From that Zara cornflower blue dress to those vibrant pink jeans and her exquisite Sarah Burton wedding gown, her sartorial selections have sent high-street and designer sales soaring as women try desperately to emulate her impeccable style.

Whether striking in bright red Alexander McQueen during the Queen's Diamond Jubilee pageant, or dressed down in Le Chameau wellies and a campfire-chic gilet while on a forest outing with inner-city children, Kate's wardrobe choices are consistently classic, carefully considered, polished and chic.

This year she has been both elegant in a plunging emerald Jenny Packham gown at the Royal Albert Hall, and supportive of the 2012 London Olympic Games by sporting a £49,000 Cartier gold hoop necklace.

We have seen her dressing demurely and respectfully when visiting temples during her tour of the South Pacific with the Duke, and casually while taking strolls along the Anglesey beach with the couple's spaniel, Lupo.

She has opted to wear designs by 'King of the dress' Roland Mouret, Canadian London-based dress-maker Erdem, Burberry, Issa, Alice Temperley, Reiss and LK Bennett.

And on tours with her husband she has gratefully worn garments gifted to her by designers from countries including the Solomon Islands and Singapore.

Even when emerging from hospital for the first time following the announcement of her pregnancy after a bout of severe morning sickness, the Duchess' navy Diane Von Furstenberg coat, cosy tights and strategically placed bouquet of yellow roses demonstrated that even when she's not feeling her best Kate still has the ability to charm us all.

And with the arrival of the Royal Bump, 2013 promises to be a year in which Prince William's wife will continue to delight and surprise us with a brand new assortment of fashion choices.

Designers are already putting pen to paper accepting the challenge of creating maternity wear fit for a future queen.

How the Duchess chooses to dress during her pregnancy - not to mention how she chooses to style herself and her baby once the little boy or girl arrives in the summer - will set trends for expectant mothers and new parents everywhere.

So today, in honour of Kate's 31st birthday, FEMAIL have taken a look back at 31 looks with which she dazzled the world....

Lilac lady: Catherine wore a lilac Alexander McQueen gown at the BAFTA Brits To Watch event

Glitz and glam: The Duchess of Cambridge arrive for ARK charity gala in a dazzling Jenny Packham gown

Favourite label: Kate wears Sarah Burton for Alexander McQueen for the evening celebrations following her wedding to Prince William earlier

Power of pink: When she wore pink jeans to play with the GB hockey teams, they become a sell-out

Designer: Kate wore this flattering gown by 'King of the dress' Roland Mouret to Claridges which she teamed with eye-catching jewellery

Teal lady: Kate wowed as she arrived for a British Olympic Team GB gala event at the Royal Albert Hall in a Jenny Packham dress

Just peachy: Kate looked lovely in peach hues as she attended a reception at Guildhall in central London for Queen Elizabeth II's Diamond Jubilee

Country cool: Kate looked country chic whilst visiting 'Expanding Horizons' Primary school camp taking part in various outdoor activities

Pretty in pink: Kate's pleated pink dress and matching hat was a hit at a garden party at Buckingham Palace

Chocolate brown: The Duchess of Cambridge looked classic in a brown coat at The Brink, an alcohol free bar, in Liverpool where she met admirers on Valentine's Day

White out: Kate looked glamorously smart during the procession of The Most Noble Order of the Garter, at Windsor Castle

Lady in red: Kate's bold dress and hat charmed the adoring crowds lining the Thames as she stood on the royal barge 'Spirit of Chartwell' during the Thames Diamond Jubilee Pageant

A touch of tartan: The Duchess added a subtle Scottish slant to her ensemble with a Strathearn tartan scarf at St Giles Cathedral after the Thistle Ceremony in Edinburgh

Electric blue: Kate showed support for British designer Stella McCartney and the London 2012 Games in this blue dress and Olympic hoop necklace at the National Portrait Gallery

Upcycling: Kate first wore this beige coat dress by Danish label DAY Birger et Mikkelsenat a 2006 wedding, and here at the Olympic stadium before the Paralympic Games opening ceremony

All white: Looking lovely in a £1,300 Anglaise suit by Alexander McQueen, with £245 Coco wedges (sister Pippa also owns a pair) and matching £245 clutch, both from Russell & Bromley

Indian prints: To meet the President of the Republic of Singapore, she opted for this print dress by Indian designer Prabal Gurung with £450 Anya Hindmarch Bespoke Maud clutch bag and £390 Prada heels

Respectfully demure: The Duchess wore an £895 ivory Beulah buttoned dress with a matching headscarf - and later removed her shoes - to visit a mosque in Kuala Lumpur

Diamond bright: Kate dazzled in a £5,000 Alexander McQueen gown teamed with a £180 Wilbur & Gussie clutch and £420 bracelet and £80 earrings by Catherine Zoraida

Pretty lace: In Kuala Lumpur (and still in her favourite nude LK Bennett heels) Kate wears this delicate blue and white dress by one of her favourite designers, Alice Temperley

Canary yellow: Kate wore this vibrant, sun-yellow £180 Jaeger dress during her Solomon Islands tour, with a traditional beaded 'Princess Kate' necklace given to her by the country's Prime Minister

Mellow yellow: The Duchess of Cambridge bade farewell to the Solomon Islands before departing for Tuvalu in this demure yellow dress, made by an independent dress-maker

Racy lacy: This black lace Alice Temperley dress, previously worn to the premiere of War Horse, stunned guests at a reception and dinner in aid of the University of St Andrews 600th Anniversary Appeal

Lady in red: The Duchess of Cambridge glowed in a burgundy wool double-breasted skirt suit by French label Paule Ka during her visit to the Middle Temple in London

A twist of tartan: Kate glowed in an Alexander McQueen coat playing hockey on a visit to her old prep school, St Andrew's School in Pangbourne - whose own uniform is uncannily similar

Bangs: When Kate arrived at a reception at the Natural History Museum with a newly cut fringe and a £1,400 emerald green silk pleated 'Cabbage' dress by Mulberry - she caught the world's attention

Thighs the limit: The Duchess of Cambridge wore a dazzling emerald green dress to present Lord Sebastian Coe with the Lifetime Achievement Award during the BBC Sports Personality of the Year Awards