The tops below are either made of earth-friendly/sustainable materials, benefit green charities, or both; a nice way to know you’re doing some good without paying top dollar to do it. All proceeds from the sales of this Coral-print tank ($36.50, was $73) benefit The Coral Reef Alliance. Plus, the coral design is pretty, and appealingly graphic in black and white. Definitely a potential night-out piece, this double-layer tank ($112, was $224) is made of sustainable silk chiffon and has a coo