MARRYING WELL: She’s not related to the Miller sisters, but 26-year-old jewelry heiress Coralie Charriol’s wedding this weekend to banker Dennis Paul, 30, at the Rothschild resort town, Megeve, in France could rival the over-the-top nuptials of Pia, Alex or Marie-Chantal. The social swirl kicks off with a canyon trip on Thursday, when the 350 guests roll into town, and a picnic on Friday, complete with a horse show. Before the ceremony on Saturday, seven 19th-century horse-drawn carriages from Charriol’s mother’s collection will be dispensed to pick up guests. “There weren’t enough white horses in Megeve, so her parents are bringing some in from Saint-Tropez,” reported Paul before flying out. Following the black-tie reception Saturday night, the couple will head for an undisclosed beach in Asia, before returning to their home in New York.