It was "isle do" for country singer Shania Twain, who found happiness again when she married Swiss businessman Frédéric Thiébaud in Puerto Rico on New Year's Day. Escorted down the aisle by son Eja, 9, the couple exchanged vows at sunset in front of only 40 of their closest family and friends. "Love, peace and happiness is taking me in to 2011," Twain wrote on her Web site.