Nicole Richie has penned a touching message to her younger sister Sofia Richie, who recently tied the knot with Elliot Grainge during a lavish wedding ceremony. On 22 April, the 41-year-old reality TV star celebrated her little sister’s nuptials at the Hotel du Cap-Eden-Roc in Antibes in the south of France. The star-studded guest list included their father Lionel Richie, as well as Nicole’s sister-in-law Cameron Diaz and her co-star on The Simple Life, Paris Hilton.