Will.i.am is allegedly suing Pharrell Williams over his YouTube channel name 'i am OTHER'.

TMZ reported that Will.i.am has filed a lawsuit against Pharrell because his YouTube name bares too much of a resemblance to his i.am+ brand.

Will.i.am is said to have initially sent Pharrell a cease and desist letter instructing him to change his YouTube name but he has now presented the courts with other documents detailing further examples of where he thinks the Blurred Lines singer has infringed on his brand.

Pharrell has previously said his i am OTHER name does not "infringe, dilute or unfairly compete" with Will.i.am's brand but he has not commented on the latest development.