This gorgeous dress is featured in Cosmo's 'S is for...' editorial and is from Marks and Spencer. Can you believe it? Priced at £65, it's a bargain and will see you right through the Winter party season (yes, I know it's a long way off yet but you can never be too prepared). The high cut neck and sheer sleeves are right on trend whilst the slightly loose style keeps it comfortable. Finish off your look with simple accessories and either a silky white blazer or the wardrobe staple of the century - a leather jacket and you are good to go.