Usher has confirmed he's set to become a dad again.

After weeks of speculation, the R+B star has revealed his wife Tameka Foster is pregnant with the couple's second child, which is due next month.

Speaking to reporters backstage at his Wednesday night concert at Los Angeles? Club Nokia, the Yeah! singer said, "It's one of the best Christmas gifts there is.?

The 30-year-old singer and his wife welcomed their first child, Usher Raymond V, into the world a year ago.

Usher has since revealed his wife is expecting another boy, due on 15 December.