Take inspiration from the traditional ivory and blue pottery of Wedgwood. The colours look refined together and cool for warm summer days. You have the choice to accessorize with either blue or white but don't be tempted to introduce a third colour. Simple and sophisticated is the key to getting this look just right. Simple jewellery is good but think minimalism- one statement piece is enough. If there is a pattern let it do the talking.
Camille's outfit : dress Ralph Lauren from TK Maxx (old) similar here, sunglasses from Pimark, earrings from New Look and can be found here.