This Linen Getaway dress by J Crew (on sale for $39.50) is a summer must. Think about it. Not only do you need a dress that you can throw over a bathing suit, or wear to Saturday brunch in the city, but you need one that will keep you cool and cute at the same time. This one has you covered on all fronts. It comes in lots of different colors, but I'll take mine in yellow, please.