December is all about excess and celebration, but for one Los Angeles based fashionista, the last month of the year is dedicated to clothing for a cause.

Blythe Hill is the founder of Dressember - a month long campaign designed to help in the fight against human trafficking. It started out as a 31 day style challenge for Hill in 2009. Last year, more than 1200 women worldwide joined in. 

A Martinez speaks with Blythe Hill about Dressember and her hopes for the campaign this year.