Can the skirts be really really short? If so, then yes.
Generally, I'm with Harry on the whole issue of dress, I think. Nothing on me cost more than a few dollars. I like to look very impoverished and destitute whenever possible, particularly when I'm vacationing in larger third-world cities.
Its your white face that designates you as rich.. though you might get better deals if you look *cheap*. Which I do - if it costs more than $2, its too much. I know some good thrift stores.
alas. yes, or as they say in Jamaica, "you're a poorist, man" (poor tourist) yeah, looking cheap helps in negotiations. ("Higgling" in Jamaica)