Has anyone got this dress from whistles? [[http://www.whistles.com/women/clothing/dresses/spot-cold-shoulder-dress-25576.html?dwvar_spot-cold-shoulder-dress-25576_color=Navy%2FMulti#q=spot&tcgid=Womenswear&start=1]] I'm in between an 8 and 10 on their size chart. Is it very fitting around the ribcage?