For anyone wanting bang on trend denim at a reasonable price,
check out topshop.com-click my title for a link and check out Danielle Schutt's new pieces.
UPDATED TO ADD: THANKS VERY MUCH for all of your opinions and comments-they were all very much appreciated and taken on board. The general opinion is to go with the dress and accessorize with dangly type earrings, clutch and sandals-either these or a different pair. There were a couple of opinions towards the new Zandra Rhodes kaftan. Kate at makedoandmend had a brilliant idea of getting white trousers, which is a wardrobe staple anyway. I will try and get these by the party date, show pictures and come to a decision-with your help of course!!!

Vintage 60s cardigan-£3, Salvation Army; Commes des Garcons vintage t shirt-£1, Collier Row Boot Sale, Levi's jeans-£5, PDSA Charity Shop