The broke fashionista realized long ago that the best designers rarely come up with anything new. Instead, they simply steal (read: rip off other eras). So it makes sense that a slew of recent trends -- are lurking in a strip mall in Mission. Uptown Monkey Bottoms has the elements to put together the cheaper version of boho chic, á la Sienna Miller and the Olsen twins (prairie skirts, little vests), as well as the distressed prim-lady look favored by starlets such as Maggie Gyllenhaal (high-necked blouses, heeled oxfords). What's next? We're putting our money on the mid-'80s prep look once worn by style mavens like, um, us.