The Tucson YWCA has so many great programs to help empower girls and women. One that is directed at women who are in need of appropriate clothing for an interview is called "Your Sister's Closet." Staff and volunteers have created a boutique atmosphere where clients can find an outfit that will give them some confidence when they are job seeking.
The Y makes it easy for you to help! Just clean out your closet (remember, interview style clothing - no jeans, t-shirts, cocktail dresses) and drive it over on any Monday where you can simply drive up, drop off, and be on your way! Here's the link for more info: http://www.ywcatucson.org/ysc.html
If Mondays don't work for you, they will make an appointment for you to bring your clothing donations in another time.