Credit: Jason LaVeris/

R&B superstar Ray-J has signed on to become a one-time Extra correspondent for Dancing With the Stars, his rep confirms to exclusively.

"He's doing it because he loves the show and wants to support Brandy's effort to win," his rep tells Us.

The VH1 reality star, 29, will make his appearance on DWTS Monday. He will then interview the contestants -- including his sister, Audrina Patridge and The Situation -- for Extra on Tuesday.

Ray-J replaces Vienna Girardi, who served as Extra's one-time DWTS correspondent during Season 10.