The book which the judges described as phenomenal, earned her the £10,000 prize for best collection.
A total of 48 poems are in the book, which looks at the experiences of sexism on a daily basis, as seen through a collection of significant others and exes.
The awards ceremony, which took place in Manchester, also saw the Felix Dennis Prize for best first collection awarded to Stephanie Sy-Quia for Amnion and Nick Laird’s Up Late receiving the prize in the best single poem category.
The Forward Arts Foundation also announced that the judging panel for next year’s prize will be chaired by Joelle Taylor and Bernardine Evaristo.