Olivia Chantecaille married hedge funder beau Warren G. Grady 3rd (Ren to friends) in St. Barth’s on May 2, walking down the aisle in a custom-made, cream lace Giambattista Valli gown with a sweetheart neckline, the first he’s ever designed for an American bride. The evening ceremony was held in St. Bartholomew’s Church in the island’s capital of Gustavia. Afterward, the bride and groom, a principal at Williams Trading LLC and 80 guests, including the bride’s mother, beauty maven Sylvie Chantecaille; sister Alex; Town & Country editor in chief Pamela Fiori; BJ Blum; Blair Voltz Clarke; Adelina Wong Ettelson, and jewelers Amedeo Scognamiglio and Roberto Faraone Mennella, were driven in white minibuses to the reception at a nearby private villa. On a terrace overlooking an infinity pool and view of the ocean, it was an intimate affair: there was one single, long table covered in gray tablecloths and french white linens — filled with exploding bouquets of white roses, peonies, orchids, freesias, votives and nautilus shells; orchid chandeliers overhead; Champagne and rum punch, and a seafood meal catered by local hot spot Maya’s. For dessert, there was a chocolate cake with white ganache with fresh flowers cascading down. And everyone stayed into the wee hours dancing up a storm, including the bride, who changed into a white J.Mendel dress.