California - Hiphop couple Nas and "Milkshake" girl Kelis call it quits! According to vibe.com - the first website to report the split, pregnant Kelis is looking to divorce her hiphop star husband after 4 years of "wonderful" marriage, the divorce was filed April 30. "I can confirm that she has filed for divorce," Kelis' rep told VIBE. "We request the media to respect her privacy during this very difficult time." Kelis' rep added. What's the common denominator of celebrity divorces? Well, the undying --- "irreconcilable differences" reason! I'm not sure with other possible reasons that can be filed for a divorce.

Kelis (full name Kelis Rogers-Jones) and Nas (full name Nasir bin Olu Dara Jones) tied the knot Jan. 8, 2005, in Atlanta after a two-year engagement. The pair are expecting their first child together—a son—this summer. Nas has a teenage daughter from a previous relationship, according to Entertainment Online.

Check out VIBE -- They have the copy of the Divorce paper!