Sofia Richie and her fiance Elliot Grainge join James Corden on boat in St. Tropez

Sofia Richie dons sporty ensemble in series of snaps she shares from vacation: 'A French dream'

Sofia Richie dons a skimpy bikini before hopping on a jet ski with fiancé Elliot Grainge in France

Sofia Richie puts her bikini body front and center as she goes jet skiing with Elliot Grainge