Watch: Joey Fatone & Melissa Rycroft ‘Dancing’ in Orlando

Joey Fatone and Melissa Rycroft are having a "Dancing with the Stars" reunion! The couple (who appeared on separate seasons) have a new partnership -- one that has them beaming with big smiles.

Melissa and Joey are kicking off a contest for a trip to Orlando on World Smile Day this October 1. The event celebrates the creation of the original, iconic yellow smiley face symbol created by Harvey Ball in 1963. Before his passing, Ball established World Smile Day to encourage everyone to devote one day each year to smiles and kind acts throughout the world.

This year, the "Dancing" alumni are helping promote the event with the contest -- which will choose 67 winners to come to Orlando for World Smile Day.