Lopez and Anthony's Romantic Duet

Jennifer Lopez and Marc Anthony have silenced rumours of an impending split by performing a romantic duet at a party celebrating the inauguration of U.S. President Barack Obama.

Latin singer Anthony was performing at the Western Ball in Washington, D.C. on Tuesday night after Obama was officially welcomed into the White House.

Anthony praised his superstar wife throughout his set and before launching into his decade old-hit, You Sang to Me, he told the crowd, "I wrote this next song about Jennifer. I must have been psychic. She didn't get the point, but eventually it worked."

And for his final song, Anthony welcomed his superstar wife onto the stage - inviting her to sing an upbeat ballad with him in Spanish.

The couple embraced and shared a lingering kiss at the end of the performance, with Anthony telling the audience, "Man, she's cute."