amy adams gives an utterly adorable performance in 'miss pettigrew lives for a day' (i know it's not new, i just happened to watch it again last week) as the beautiful but impossibly naive delysia lafosse, which got me thinking about similarly flighty female characters i love...
barbara windsor delights in the carry on films
rosamund pike as the stylish but silly helen in an education
amanda seyfried as the delightfully dim karen in mean girls 
