No 'Blurred Lines' Here! Pharrell Williams Marries Helen Lasichanh

They'll be no more "Blurred Lines" for Pharrell Williams.

The triple threat singer/songwriter/record producer, who goes by just his first name, wed longtime girlfriend Helen Lasichanh on Saturday.  The couple are already parents to a son, Rocket, 4.

Pharrell co-wrote and produced Robin Thicke's megahit, "Blurred Lines," and performed with him on the record and in the super-sexy video.  Surprisingly, Thicke reportedly did not attend the ceremony.

But Usher and Busta Rhymes  were there and put on a mini-concert for the newlyweds.