Williams' professional writing career began in 2004, when she founded the fashion blog Shake Your Beauty. She also worked as an editor at publications including
Essence,
Glamour,
Teen People, and
Elle. Williams worked as the head copywriter at
Bumble and bumble for five years. Since 2020, she has been the editorial director of the
Estée Lauder Companies. Williams published her first novel
The Accidental Diva in 2004 during a resurgence of
chick lit published by and about Black women. It received a positive review from
Publishers Weekly, where her writing was praised: "Williams's gift for sexy if sometimes purple prose...save this energetic romance from being just another uptown girl meets downtown boy tale and signals the arrival of a sharp new talent." In 2006, she co-authored the book
The Beauty of Color with
Iman. The protagonist lives with chronic
migraines, a condition that Williams also has. Tembe Denton-Hurst of
New York reviewed the book positively: "It's been a while since I read a book I was delighted by — a book that made me smile wide for no reason because of how touching or cute it is."
BookPage writer Jessica Wakeman gave it a starred review.
Seven Days in June is in development to be adapted into a television series produced by
Will Packer Media with Williams as executive producer. == Personal life ==