I made these eggs together with my mother and grandmother when visiting them for Easter last year. You just place leaves and flowers on an egg, cover the egg in onion shells, wrap it up tightly in tin foil and boil it for a few hours. Wonder if the Marni designers did a session like that as well?? The colour scheme and design of their SS/10 collection is somehow very similar to the look of this kind of eggs!
Fashion with eggs-factor