It's official. Green is the colour of the season - spotted all over, from runway shows to instagram posts. From emerald and forest, to military and pastel, this collection of green cocktail dresses will make sure you're ready for any occasion. Browse styles by Roberto Cavalli, Halston Heritage and Zac Posen for a go-to classic style, or try a KENZO shift dress for a more modern take on cocktail chic. Pass the Martini shaker?