The annual ceremony, which was held at the Savoy Hotel, was this year hosted by TV presenter and model Alexa Chung.
Transformers: Dark of the Moon star Rosie Huntington-Whiteley was named 2012's 'Style Icon', while Michelle Williams took home the 'Best Actress' prize for her role in My Week with Marilyn.
Mad Men's Christina Hendricks was awarded the 'Best TV Star' gong, Florence Welch took out the 'Best Music Act' category and period drama Downton Abbey was named 'Best TV Show'. Sarah Burton, who designed the Duchess of Cambridge's wedding dress last year, won the 'International Designer of the Year' prize.
Celebrity presenters at the show included Cuba Gooding Jr, Naomi Campbell, Christina Ricci and Gillian Anderson.
See the full list of winners at the Elle Style Awards below:
Best TV Show
Best TV Star
Best Music Act
Next Future Icon
International Designer of the Year
British Designer of the Year
Jewellery Designer of the Year
Accessory Designer of the Year
Next Young Designer of the Year
Contemporary Brand of the Year