I am totally digging the Prada Minimal Baroque sunglasses, the arms have a funky curvy design and the lenses are super big and round like Johnny Depp as Willy Wonka. Great for a hungover day or just to make sure your face gets protected from as many rays as possible (nobody wants eye wrinkles). Pretty pricey but I think they are worth it. The glasses come in four colours - black, white, a light brown and a tortoiseshell.
£210 from http://store.prada.com/en/UK/woman/sunglasses/minimal-baroque