If you have office-suitable clothes, please consider your local "Dress for Success" chapter.
Dress for Success They take not only pants and suits, but also accessories.
They help disadvantaged women entering or re-entering the work force, and provide them with a suitable outfit when they get a job interview, as well as the opportunity to get another appropriate for their job, if they are successful. They particularly seek sizes over 14. In my state there are even drop-off boxes at offices of a large local realty chain.