USA TODAYMariah Carey, Nick Cannon renew wedding vows at Eiffel TowerUSA TODAYBy Thibault Camus, AP Mariah Carey, left, and Nick Cannon pose Friday in Paris, where they renewed their wedding vows. By Thibault Camus, AP Mariah Carey, left, and Nick Cannon pose Friday in Paris, where they renewed their wedding vows.Mariah Carey Calls Wedding Vow Renewal in Paris AmazingAceShowbiz4.