So following my personal shopping experience I have discovered that this dress style
www.fennwrightmanson.com/mailorder/product.php?xProd=819&xSec=191&jssCart=8a930247c9af45abe108d73efb e51d30
(hope the link works)
suits my shape. Does anyone know any other shift dresses around that are plane that I could get away with wearing at work?