Zittel began creating Six Month Uniforms in 1991 as a response to the social dictate to wear an entirely different change of clothes every day. By wearing a single uniform for six months, she no only eliminated the stress of choosing a daily outfit , but also generated an alternative to the mandate of perpetual variety mandated consumer culture. More then seventy variations of the A-Z Personal Uniform now exist.
The first A-Z Six Month Personal Uniforms were cut and sewn. They ranged from basic wool dresses to silk adorned tulle and wool petticoats. For her job in an art gallery and the working the studio, the artist needed an attractive yet flexible uniform (1992); for her work maintaining a chicken coop and other more strenuous daily activites, the uniform design added pants (1993).