For last night's Fresh Air Fund's Salute to American Heroes in NYC, sister duo Mary-Kate and Ashley Olsen styled up two chic takes on cocktail attire in black and white, respectively. While both opted for dresses from their own The Row label, each took her own approach to outfitting standout evening ensembles. Mary-Kate stepped out in a kimono-style black sheath, complete with a sash at the waist. She played up the drama with a few strategic add-ons, like her emerald cocktail ring, jewel-drop earrings, and croc-embossed clutch, also by The Row. Meanwhile, Ashley played opposites in a fitted and textured white sheath, which she finished with slingback pointed-toe pumps and an armful of gold bangles. Each makes a case for dressing up classic cocktail attire with beautifully unique accessories. Feeling inspired? Shop our editors' picks to channel the same eclectic glamour.