hiya! i want to buy some basic tops from ya-ya and i am usually between a 2 & 4...usually wear a S top on blue fly http://www.bluefly.com/pages/products/detail.jsp?PRODUCT%3C%3Eprd_id=2046580393&FOLDER%3C%3Efolder_id=7544783&N=933+4294966167&Ns=Price%7c0%7c%7cProduct%2bCode%7c1&Nu=Product+ID they said a S is actually a 2...and L a 4? does anyone know how accurate this is? i'm thinking i should just pick up M but thought i'd just get everyone's opinions.thanks!!!!!!