My favorate site look through for the latest fashion retail updates is www.style.com
and there is website called www.greatglam.com that has retail updates and these garments and assessaries can be purchased also.
if u are interesting in fashion but in style way u can check tank magazine they ve got really good stuff and worth to look styles and trends in there or u can try the books i suggest u "The little black book of style" or its called "fashion now" .if u are interesting in websites my favourite is wgsn.com which is i think is the best to check the latest styles and fashion trends.