On Saturday (Sept. 7), Beyoncé attended the Nantucket, Mass., wedding of her former personal assistant, Sam Greenberg, wearing a Farm Rio Floral Blouse and a Black Peony Fringe Midi Skirt.

Amelia Sacks is about to marry into one of Nantucket's most well-to-do families, but the perfect wedding is thrown into chaos when a dead body turns up on the beach—and all of the sudden ...