"There are certain colors that put you in a better mood when you wear them; they create a visual impression. It's not by chance that little girls always want pink, it's so uplifting," says the Creative Director of Roberto Cavalli, Peter Dundas. Crafted from swathes of silk-chiffon, this serpent-print gown is cut with '70s-inspired bell sleeves and a slightly dropped waist. We like how cutouts at the front and back reveal a hint of skin.