The former Spice Girl turned fashion designer, who attended the red carpet event at the Berkeley Square Gardens on the arm of her eldest son Brooklyn, 14, was presented with the prize by Burberry's Chief Creative Officer Christopher Bailey, and used her moment on stage to reaffirm her support for "girl power".
Here are some of the other Glamour Women of the Year winners:
Sportsman - Nicola Adams (GETTY)
Entrepreneur - Myleene Klass (BANG)
International TV Actress - Zosia Mamet (Zosia-Mametgofugyourself.com)