The Duchess is set to make the Holidays a fashionable one by commissioning dresses from the high end fashion house.

The Duchess has a knack for buying clothes from the likes of Zara, but she made sure that she'll dress like a princess on Christmas Day by ordering ensembles from no less than Sarah Burton for Alexander McQueen for the Holidays.

"Kate will need a casual outfit for breakfast, a smart outfit - and a hat - for the morning church service, a dress for lunch, a cocktail dress for early evening drinks and a full-length dress for the evening meal." claims a royal etiquette adviser to Grazia Magazine.

The Duchess is no stranger to the high fashion brand, with Sarah Burton, Alexander McQueen's design director, creating her much talked-about wedding gown. Since the Royal Wedding, Kate has been seen numerous times in many Alexander Mc Queen pieces.

One memorable look is the white and blue military-inspired coat The Duchess paired with a similarly-hued gallop spectator hat. Another one is the blue pencil shirt and white riveted, military silk Georgette blouse she donned in a public appearance.

There's also this belted lilac ball gown Middleton wore for the BAFTA for Brits event in Hollywood, an affair that was attended by heavy hitters such as Tom Hanks, Jennifer Lopez, and Nicole Kidman. The billowing silhouette of the dress truly made The Duchess look like a princess, which made her outshine some of the best-looking celebrities this world has ever known.

Another Sarah Burton for Alexander McQueen dress is the sailor-inspired white dress Middleton wore during her North American trip, the same dress Hollywood fashion queen, Sarah Jessica Parker, wore for one of her premieres.

View the slideshow to see The Duchess' most memorable looks from Alexander McQueen

Also read:

Pippa Middleton, Serious on Becoming an Author

Kate Middleton and Victoria Beckham's Ultimate Beauty Secret: Bee Venom [PHOTOS]

Who Beat Kate Middleton? 2011 British Fashion Awards Results [PHOTOS]

Kate Middeleton Dazzles in Green Silk Mulberry Dress [PHOTOS]

Kate Middleton, Duchess of Cambridge, on Armed Forces Day in Windsor, southern England.

During an visit to the Summerfield Community Center in Birmingham, Kate donned an edgier look with this Alexander McQueen military-inspired blouse and skirt.

Saturday night also proved as eventful for the royal highnesses in downtown Los Angeles at the Belasco Theater. Prince William, who also serves as the president of the British Academy and Television Arts, attended the star-studded BAFTA Brits to Watch 2011 Gala. Guest line-up ranged from up and coming British actors to Nicole Kidman and Tom Hanks.

Britain's Catherine the Duchess of Cambridge arrives at the Machan Express Coffee bar in the centre of Birmingham, August 19, 2011. William and Catherine visited the coffee shop which was looted during last week's violent disturbances.

Britain's Prince William and Catherine, Duchess of Cambridge, walk after their wedding ceremony in Westminster Abbey in central London. The gown is a design by Sarah Burton for Alexander McQueen's fashion house.

Kate Middleton (L) arrives to Westminster Abbey for her marriage to Britain's Prince William in central London April 29, 2011.

Kate Middleton flaunts her evening gown after her wedding on April 29, 2011.

Kate Middleton in Alexander McQueen Sailor Dress