Grammy-winning artist Usher filed for divorce from his wife of nearly two years, Tameka Foster, Friday in Atlanta.

Legal papers don’t cite an official reason for the split. A source tells Usmagazine.com the pair have been “separated for awhile.”

Look back at Hollywood’s ugliest divorces.

Usher, 30, and Foster, 38, have two sons together: Usher Raymond V, 21 months, and Naviyd Ely, who was…

Join Us on Facebook and Twitter for even more up to the minute celebrity news and photos!