The couple - who wed in 2005 after a two-year relationship and announced they were calling time on their marriage in April 2009, even though Kelis was pregnant at the time - are now legally separated after a year-long battle.
According to legal documents which were filed at Los Angeles County Superior Court on Friday (21.05.10), rapper Nas has been ordered to pay over $10,000 a month for child and spousal support but is claiming he can`t afford it.
`Acapella` singer Kelis - who cited irreconcilable differences as the reason for the divorce - also filed a contempt motion against Nas in February because he had not yet paid any money for the upbringing of their 10-month-old son Knight, claims which the hip-hop star denies.
Although the exact reason for their marriage breakdown is not known, the 29-year-old star previously took to her twitter blog to blast married men who are unfaithful, in what was interpreted as a veiled swipe at Nas.
She wrote: "No seriously I have no patience for any of it but the problem is women usually blame the women. I am here to say that the husband is way more at fault, now of course the woman/women who partake are stupid and pitiful. An honestly I will say its expected from younger girls 23 and under. But after that I do think we as women need to take more responsibility. Men are driven by something different then we are and that is generally stupidity, don`t worry we still love you guys. We just have to be smarter."