Ann Taylor Goddess Maxi Dress
Your casual-Friday secret weapon, this pretty and polished maxi is sophisticated enough for a relaxed workday but transitions beautifully after hours, should you be headed for, say, rooftop cocktails or dinner at a smart restaurant. Just swap flat sandals for heeled wedges and add statement earrings. Available in two other colors as well as petite sizes.
To buy: $129, anntaylor.com.