It is safe to say that 2011 will go down as the year of the Middleton sisters, who have graced the pages of countless fashion magazines for their style and beauty.

Between them, Kate and Pippa Middleton brought us the Royal Wedding, Pippa's curvy behind and endless fashion triumphs among a host of other wow-worthy moments.

Whether it's Kate flaunting her royal flair with a modern edge or Pippa showing us the perfect way to do casual-chic, the siblings got it right time and time again.

Known for her love of British fashion, Kate was always keen to champion high street favourites, including Reiss, LK Bennett, Topshop and Hobbs. The 29-year-old Duchess of Cambridge showed us this year that she is no ordinary royal.

After Pippa's shapely bottom caught the attention of the world in "that dress" she wore to the royal wedding, the 27-year-old sister quickly became an international sex symbol and was dubbed "Her Royal Hotness" by websites across the globe.

Here we take a look at some of the Kate and Pippa Middleton's best fashion moments of the year.