R&B singer and reality star Brandy has been sued by a international DJ after he claims that she failed to uphold her end of a deal.

Marc Mysterio claims her paid the R&B singer $10,000 but he says that Brandy failed to produce the music which was part of the deal, according to TMZ.

The DJ said that because of the singer's lack of commitment to uphold the deal, he lost more than $25,000.

Brandy is yet to make a comment.

Check out our pictures of Brandy and Kelly Rowland out in L.A. last week...